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Clinical Biochemistry E-Book

Clinical Biochemistry E-Book

William J. Marshall | Stephen K Bangert

(2014)

Abstract

Essential reading for candidates for the MRCPath examination and similar postgraduate examinations in clinical biochemistry. The book gives an overview of the acquisition of data, as well as concentrating on clinical aspects of the subject, giving detailed coverage of all conditions where clinical biochemistry is used in diagnosis and management. In common with other diagnostic specialties clinical biochemistry now uses an increasing number of techniques involving the 'new biology': these are covered in this book. It is also increasingly common for medically qualified clinical biochemists to become involved in the clinical management of patients (eg nutritional support) and material on this will be included.

  • From the author of the popular Clinical Chemistry medical student textbook.
  • Although there are many competing texts on clinical chemistry, the vast majority concentrate on the technology; this book concentrates on the clinical.
  • Ideally suited for preparation for the MRCPath and similar examination.
    • Significant changes to content to reflect changes in how clinical chemistry services are organised and to reflect the advent of metabolic medicine as a recognised specialty.
    • Chapter on Clinical biochemistry of nutrition to include new information on regulation of appetite and the clinical management of obesity.
    • New chapter to bring together information on inborn errors of metabolism affecting adults.
    • New chapter on clinical biochemistry of cardiovascular disease.
    • The diabetes chapter has been split into two separate chapters to allow more detailed description of the practical clinical management of the disease.

    Table of Contents

    Section Title Page Action Price
    Front Cover Cover
    Clinical Biochemistry: Metabolic and Clinical Aspects iii
    Copyright Page iv
    Contents v
    Preface vii
    Contributors ix
    Chapter 1. The uses of biochemical data in clinical medicine 1
    INTRODUCTION 1
    SPECIFIC USES OF BIOCHEMICAL TESTS 2
    CONCLUSION 5
    FURTHER READING 6
    Chapter 2. The acquisition of biochemical data 7
    INTRODUCTION 7
    THE TEST REQUEST 7
    FACTORS AFFECTING TEST RESULTS 7
    CONCLUSION 16
    FURTHER READING 16
    Chapter 3. The interpretation of biochemical data 17
    INTRODUCTION 17
    THE QUALITY OF RESULTS 17
    NORMAL AND ABNORMAL 17
    THE INTERPRETATION OF RESULTS 20
    THE PREDICTIVE VALUE OF TESTS 22
    EVIDENCE-BASED CLINICAL BIOCHEMISTRY 27
    CONCLUSION 27
    FURTHER READING 27
    Chapter 4. Sodium, water and potassium 28
    PHYSIOLOGY 28
    DISORDERS OF SODIUM METABOLISM 34
    DISORDERS OF WATER METABOLISM 41
    DISORDERS OF POTASSIUM METABOLISM 54
    CONCLUSION 64
    FURTHER READING 64
    APPENDIX 4.1: FORMULAE 65
    APPENDIX 4.2: DYNAMIC FUNCTION TESTS 65
    Chapter 5. Hydrogen ion homoeostasis and tissue oxygenation and their disorders 67
    INTRODUCTION 67
    THE PHYSIOLOGICAL ROLE OF HYDROGEN IONS 67
    HYDROGEN ION HOMOEOSTASIS 68
    THE ASSESSMENT OF ACID–BASE STATUS 75
    DISORDERS OF HYDROGEN ION HOMOEOSTASIS 76
    TISSUE OXYGENATION 89
    CONCLUSION 94
    FURTHER READING 94
    Chapter 6. Calcium, phosphate and magnesium 95
    CALCIUM METABOLISM 95
    PHOSPHORUS METABOLISM 110
    MAGNESIUM METABOLISM 119
    CONCLUSION 124
    FURTHER READING 124
    APPENDIX 6.1: CALCIUM ABSORPTION TEST 124
    APPENDIX 6.2: ANALYSIS OF TUBULAR HANDLING OF CALCIUM 125
    APPENDIX 6.3: CLASSIFICATION OF PSEUDOHYPOPARATHYROIDISM 125
    APPENDIX 6.4: ESTIMATION OF TmP/GFR 126
    APPENDIX 6.5: MAGNESIUM RETENTION TEST 126
    APPENDIX 6.6: RENAL TUBULAR REABSORPTION OF MAGNESIUM 126
    Chapter 7. The kidneys, renal function and renal failure 128
    ANATOMY 128
    RENAL FUNCTION 131
    RENAL DISEASE AND ITS PRESENTATION 134
    THE ASSESSMENT OF RENAL FUNCTION 135
    ACUTE RENAL FAILURE 141
    CHRONIC RENAL FAILURE 147
    CONCLUSION 154
    FURTHER READING 155
    Chapter 8. Proteinuria 156
    INTRODUCTION 156
    PROTEIN CONSERVATION BY THE KIDNEYS 156
    NORMAL URINARY PROTEIN CONTENT 159
    PROTEINURIA IN RENAL DISEASE 160
    MICROALBUMINURIA AS A MARKER OF RISK 168
    CLINICAL INVESTIGATION OF PROTEINURIA 170
    FURTHER READING 172
    Chapter 9. Renal tubular disorders and renal stone disease 174
    INTRODUCTION 174
    RENAL TUBULAR DISORDERS 174
    RENAL CALCULI 180
    CONCLUSION 185
    FURTHER READING 185
    APPENDIX 9.1: DIAGNOSIS OF RENAL TUBULAR ACIDOSIS 185
    Chapter 10. The clinical biochemistry of nutrition 186
    INTRODUCTION 186
    NUTRITIONAL REQUIREMENTS 186
    ASSESSMENT OF NUTRITIONAL STATUS 199
    CONCLUSION 206
    FURTHER READING 206
    Chapter 11. Nutritional disorders and their management 207
    INTRODUCTION 207
    GENERALIZED UNDERNUTRITION 207
    OBESITY 209
    EATING DISORDERS 216
    DIET IN THE AETIOLOGY OF DISEASE 217
    THERAPEUTIC DIETS, DIETARY SUPPLEMENTS AND NUTRACEUTICALS 218
    PROVISION OF NUTRITIONAL SUPPORT 220
    CONCLUSION 224
    FURTHER READING 224
    Chapter 12. The clinical biochemistry of the gastrointestinal tract 225
    INTRODUCTION 225
    MOUTH AND OESOPHAGUS 226
    STOMACH 226
    PANCREAS 229
    SMALL BOWEL BACTERIAL OVERGROWTH 231
    MALDIGESTION AND MALABSORPTION 233
    INTESTINAL PERMEABILITY 240
    FAECAL TESTS OF INTESTINAL INFLAMMATION 245
    SMALL INTESTINAL TUMOURS AND HORMONES 247
    THE ACUTE ABDOMEN 250
    FURTHER READING 252
    Chapter 13. The assessment of hepatic function and investigation of jaundice 253
    INTRODUCTION 253
    ANATOMY OF THE LIVER 253
    HEPATIC REGENERATION 256
    PHYSIOLOGICAL FUNCTIONS 256
    LIVER FUNCTION TESTS 259
    USES OF LIVER FUNCTION TESTS 268
    ABNORMAL LIVER FUNCTION TESTS IN ASYMPTOMATIC PATIENTS 270
    NORMAL LIVER FUNCTION TESTS IN THE PRESENCE OF OVERT LIVER DISEASE 271
    ROLE OF LIVER FUNCTION TESTS IN ASSESSING PROGNOSIS 271
    CONCLUSION 272
    FURTHER READING 272
    Chapter 14. Acute and chronic liver disease 274
    CLASSIFICATION OF LIVER DISEASE 274
    ACUTE HEPATITIS AND ITS SEQUELAE 274
    ACUTE LIVER FAILURE 277
    CHRONIC HEPATITIS 277
    PRIMARY BILIARY CIRRHOSIS (PBC) 281
    PRIMARY SCLEROSING CHOLANGITIS (PSC) 281
    ALCOHOLIC LIVER DISEASE 281
    THE CONCEPT OF CIRRHOSIS 283
    DRUGS AND THE LIVER 288
    NEOPLASTIC DISEASE OF THE LIVER AND BILIARY TRACT 288
    TOTAL PARENTERAL NUTRITION 289
    BACTERIAL INFECTIONS 289
    REYE'S SYNDROME 289
    INHERITED METABOLIC DISORDERS INVOLVING THE LIVER 290
    LIVER TRANSPLANTATION 295
    CONCLUSION 296
    FURTHER READING 297
    Chapter 15. Diabetes mellitus: pathophysiology and biochemical background 298
    PHYSIOLOGY AND PATHOPHYSIOLOGY OF GLUCOSE HOMOEOSTASIS 298
    DIAGNOSIS AND CLASSIFICATION OF DIABETES MELLITUS 307
    ENDOCRINE ASSOCIATIONS WITH DIABETES 320
    DIABETES, NUTRITION AND GROWTH 321
    MECHANISMS OF DIABETIC TISSUE DAMAGE 321
    CONDITIONS ASSOCIATED WITH INADEQUATELY CONTROLLED DIABETES MELLITUS 323
    BIOCHEMICAL MEASUREMENTS IN DIABETES MELLITUS 324
    CONCLUSION 327
    FURTHER READING 327
    Chapter 16. The clinical management of diabetes mellitus 329
    INTRODUCTION 329
    GENERAL ASPECTS OF MANAGEMENT 329
    HYPOGLYCAEMIC TREATMENT IN DIABETES 332
    OBSTACLES TO ACHIEVING GLYCAEMIC CONTROL 339
    DIABETIC EMERGENCIES 342
    MANAGEMENT OF SOME SPECIFIC COMPLICATIONS OF DIABETES 347
    MANAGEMENT OF DIABETES IN THE HOSPITAL SETTING 349
    FURTHER READING 351
    Chapter 17. Hypoglycaemia 352
    GLUCOSE HOMOEOSTASIS IN THE FED AND THE POSTABSORPTIVE STATES 352
    HYPOGLYCAEMIA 353
    CLASSIFICATION OF HYPOGLYCAEMIC DISORDERS 355
    PRACTICAL APPROACH AND INVESTIGATION OF HYPOGLYCAEMIA 355
    EMERGENCY TREATMENT OF HYPOGLYCAEMIA 359
    CAUSES OF HYPOGLYCAEMIA 359
    CONCLUSION 367
    FURTHER READING 367
    Chapter 18. Hypothalamic, pituitary and adrenal disorders 368
    INTRODUCTION 368
    CLINICAL ANATOMY OF THE PITUITARY AND HYPOTHALAMUS 368
    PHYSIOLOGY OF HYPOTHALAMO–PITUITARY–END-ORGAN AXES 369
    CLINICAL ANATOMY AND PHYSIOLOGY OF THE ADRENALS 371
    ASSESSMENT OF NORMAL PITUITARY FUNCTION 371
    OTHER DIAGNOSTIC TECHNIQUES IN PITUITARY DISEASE 379
    PITUITARY HYPERSECRETION STATES 380
    HYPOTHALAMIC AND PITUITARY DEFICIENCY STATES 387
    ADRENAL DISEASE 389
    MONITORING PITUITARY AND ADRENAL REPLACEMENT THERAPY 390
    CONCLUSION 391
    FURTHER READING 391
    APPENDIX 18.1: TEST PROTOCOLS 391
    Chapter 19. Thyroid dysfunction 394
    INTRODUCTION 394
    NORMAL THYROID PHYSIOLOGY 394
    THE EVALUATION OF THYROID FUNCTION 402
    HYPERTHYROIDISM 408
    HYPOTHYROIDISM 414
    THYROIDITIS 418
    NEOPLASIA 419
    SYNDROMES OF RESISTANCE TO THYROID HORMONES 420
    SCREENING 420
    FURTHER READING 420
    Chapter 20. Hormonal aspects of non-endocrine disease 422
    INTRODUCTION 422
    THE METABOLIC RESPONSE TO STRESS 422
    ENDOCRINE EFFECTS OF PSYCHOSOCIAL STRESS 427
    RENAL DISEASE 427
    LIVER DISEASE 431
    AGEING 433
    CONCLUSION 435
    FURTHER READING 435
    Chapter 21. Disorders of sex development 436
    INTRODUCTION 436
    DISORDERS OF SEX DEVELOPMENT 436
    PUBERTY 446
    INVESTIGATIONS 451
    FURTHER READING 452
    Chapter 22. The clinical biochemistry of female reproductive function, pregnancy, contraception and hormone replacement therapy 453
    INTRODUCTION 453
    PHYSIOLOGY 453
    HORMONES REGULATING REPRODUCTIVE FUNCTION 456
    REPRODUCTIVE STEROID HORMONES 457
    OLIGO- AND AMENORRHOEA 460
    INFERTILITY 460
    HIRSUTISM AND VIRILISM 461
    PREGNANCY 462
    ORAL CONTRACEPTION AND HORMONE REPLACEMENT THERAPY 467
    FURTHER READING 470
    APPENDIX 22.1: ACTH STIMULATION TEST FOR THE DIAGNOSIS OF CONGENITAL ADRENAL HYPERPLASIA 470
    Chapter 23. Reproductive function in the male 471
    INTRODUCTION 471
    THE TESTIS 471
    EVALUATION OF TESTICULAR FUNCTION 473
    MALE HYPOGONADISM 474
    GYNAECOMASTIA 476
    IMPOTENCE 477
    FURTHER READING 479
    APPENDIX 23.1: PROTOCOLS FOR ENDOCRINE INVESTIGATIONS 480
    Chapter 24. Inherited metabolic disease 481
    INTRODUCTION 481
    CLINICAL PRESENTATION AND PATHOPHYSIOLOGY 481
    NEWBORN SCREENING 486
    INHERITANCE 486
    DIAGNOSTIC STRATEGIES 489
    PRENATAL DIAGNOSIS 496
    MANAGEMENT 497
    CONCLUSION 504
    FURTHER READING 504
    Chapter 25. Paediatric clinical biochemistry 505
    INTRODUCTION 505
    POSTNATAL INVESTIGATION OF THE SMALL FOR GESTATIONAL AGE NEWBORN 505
    RESPIRATORY DISORDERS 506
    RENAL FUNCTION 508
    CARBOHYDRATE METABOLISM 510
    CALCIUM AND PHOSPHORUS METABOLISM 512
    DISORDERS OF LIVER FUNCTION 514
    PARENTERAL NUTRITION 519
    DISORDERS OF GROWTH 520
    INHERITED METABOLIC DISEASES 521
    FURTHER READING 536
    Chapter 26. Biochemical aspects of anaemia 538
    INTRODUCTION 538
    RED CELL FORMATION, STRUCTURE, FUNCTION AND METABOLISM 538
    ANAEMIA 539
    ANAEMIAS DUE TO FAILURE OF CELL PRODUCTION 541
    BLOOD LOSS OR HAEMORRHAGE 547
    HAEMOLYTIC ANAEMIA 547
    CONSEQUENCES OF HAEMOLYSIS 551
    DIAGNOSIS OF HAEMOLYSIS 551
    CONCLUSION 557
    FURTHER READING 557
    Chapter 27. The porphyrias: inherited disorders of haem synthesis 558
    INTRODUCTION AND OVERVIEW 558
    PORPHYRIAS PRESENTING WITH ACUTE ATTACKS 563
    THE CUTANEOUS PORPHYRIAS 568
    NEW APPROACHES TO TREATMENT 574
    SECONDARY DISORDERS OF PORPHYRIN METABOLISM 574
    CONCLUSION 575
    FURTHER READING 575
    APPENDIX 27.1: DRUGS THAT ARE CONSIDERED SAFE FOR USE IN PATIENTS WITH ACUTE PORPHYRIAS 576
    Chapter 28. The haemo globino pathies 578
    INTRODUCTION 578
    THE THALASSAEMIAS 580
    STRUCTURAL HAEMOGLOBIN VARIANTS 582
    LABORATORY DIAGNOSIS OF HAEMOGLOBINOPATHIES 585
    CONCLUSION 587
    FURTHER READING 587
    Chapter 29. Immunology for clinical biochemists 588
    THE IMMUNE SYSTEM 588
    DISEASES OF THE IMMUNE SYSTEM 604
    LYMPHOID MALIGNANCIES 616
    INFECTION AND SEPSIS 626
    CONCLUSION 628
    FURTHER READING 628
    Chapter 30. Metabolic bone disease 629
    BONE BIOLOGY 629
    OSTEOPOROSIS 638
    OSTEOMALACIA 644
    RENAL OSTEODYSTROPHY 648
    BONE DISEASE IN PRIMARY HYPERPARATHYROIDISM 652
    PAGET'S DISEASE OF BONE 653
    BONE TURNOVER AND BONE DISEASE IN CHILDREN 656
    GENETIC BONE DISEASES 656
    CONCLUSION 658
    FURTHER READING 659
    APPENDIX 30.1: INDICATIONS FOR DIAGNOSTIC TRANSILIAC BONE BIOPSY 659
    APPENDIX 30.2: PROTOCOL FOR DESFERRIOXAMINE TEST IN DIALYSIS PATIENTS 659
    Chapter 31. The biochemistry of articular disorders 660
    INTRODUCTION 660
    THE ARTICULAR SYSTEM 660
    DISORDERS OF THE ARTICULAR SYSTEM 661
    ARTICULAR INVOLVEMENT IN SYSTEMIC DISEASE 665
    THE ARTICULAR SYSTEM AND ENDOCRINE DISORDERS 666
    LABORATORY TESTING IN ARTICULAR DISEASE 666
    CONCLUSION 667
    FURTHER READING 668
    Chapter 32. Muscle disease 669
    INTRODUCTION 669
    FUNCTIONAL ANATOMY AND PHYSIOLOGY OF MUSCLE 669
    DISEASES OF MUSCLE AND THEIR INVESTIGATION 673
    BIOCHEMICAL INVESTIGATION OF MUSCLE DISEASE 674
    INVESTIGATION OF MUSCLE DISEASE 676
    CONCLUSION 682
    ACKNOWLEDGEMENT 682
    FURTHER READING 682
    APPENDIX 32.1:THE ISCHAEMIC EXERCISE TEST 682
    Chapter 33. Investigation of cerebrospinal fluid 683
    INTRODUCTION 683
    CEREBROSPINAL FLUID PHYSIOLOGY 683
    INVESTIGATIONS RELEVANT TO PHYSIOLOGY AND PATHOPHYSIOLOGY 684
    BIOCHEMICAL INVESTIGATIONS IN CNS DISORDERS 692
    CONCLUSION 695
    FURTHER READING 696
    Chapter 34. Biochemical aspects of psychiatric disorders 697
    INTRODUCTION: PSYCHIATRY AS A CLINICAL DISCIPLINE 697
    THE CLASSIFICATION OF PSYCHIATRIC DISORDERS 698
    THE AETIOLOGY OF PSYCHIATRIC DISORDERS 699
    BIOCHEMICAL INVESTIGATIONS IN PSYCHIATRIC DISORDERS 699
    PSYCHIATRIC MANIFESTATIONS OF ORGANIC DISEASE 699
    ENDOCRINE AND METABOLIC MANIFESTATIONS OF PSYCHIATRIC DISEASE 703
    METABOLIC COMPLICATIONS OF PSYCHOTROPIC DRUGS 704
    FUTURE DEVELOPMENTS 705
    CONCLUSION 705
    FURTHER READING 705
    Chapter 35. Biochemical aspects of neurological disease 706
    INTRODUCTION 706
    ENCEPHALOPATHY AND SEIZURES 706
    MOVEMENT DISORDERS 709
    ATAXIA 712
    SPINAL CORD DISORDERS 715
    PERIPHERAL NEUROPATHY 715
    CONCLUSION 722
    FURTHER READING 722
    Chapter 36. Biochemical aspects of mental retardation 723
    INTRODUCTION 723
    AETIOLOGY 724
    CHROMOSOMAL DISORDERS 724
    DISORDERS OF AMINO ACID METABOLISM 731
    LYSOSOMAL STORAGE DISORDERS 740
    OTHER SYNDROMES 744
    CONCLUSION: FINAL CONSIDERATIONS ON DIAGNOSIS IN MENTAL RETARDATION 747
    FURTHER READING 748
    Chapter 37. Lipid metabolism, hyper- and hypolipidaemias 749
    INTRODUCTION 749
    LIPIDS 750
    LIPOPROTEINS 752
    APOLIPOPROTEINS 754
    ASSEMBLY OF LIPOPROTEINS 756
    CHOLESTEROL ABSORPTION 757
    TRIGLYCERIDE DIGESTION 757
    BILE ACID METABOLISM 757
    LIPOPROTEIN METABOLISM 758
    ENZYMES INVOLVED IN LIPOPROTEIN METABOLISM 761
    TRANSFER PROTEINS INVOLVED IN LIPOPROTEIN METABOLISM 763
    RECEPTORS INVOLVED IN LIPOPROTEIN METABOLISM 764
    OTHER PROTEINS INVOLVED IN LIPOPROTEIN SYNTHESIS, TRANSPORT AND METABOLISM 765
    CLASSIFICATION OF LIPOPROTEIN DISORDERS 766
    THE PRIMARY DYSLIPOPROTEINAEMIAS 767
    ACQUIRED HYPERLIPIDAEMIA 775
    ACQUIRED HYPOLIPIDAEMIA 778
    INVESTIGATION OF LIPID DISORDERS 778
    TREATMENT OF HYPERLIPIDAEMIA 780
    CONCLUSION 780
    FURTHER READING 782
    Chapter 38. The clinical biochemistry of the cardiovascular system 783
    INTRODUCTION 783
    ATHEROSCLEROSIS 783
    CARDIOVASCULAR RISK FACTORS 788
    ENDOTHELIAL FUNCTION AND ITS ASSESSMENT 798
    MARKERS OF INSTABILITY OF CORONARY ARTERY LESIONS 800
    CLINICAL ASSESSMENT OF CARDIOVASCULAR RISK 800
    HYPERTENSION 802
    HEART FAILURE 807
    ACUTE CHEST PAIN 808
    CONCLUSION 813
    FURTHER READING 813
    Chapter 39. Therapeutic drug monitoring 814
    INTRODUCTION 814
    USES OF THERAPEUTIC DRUG MONITORING 819
    INDIVIDUAL DRUGS 822
    PROVISION OF A THERAPEUTIC DRUG MONITORING SERVICE 831
    QUALITY CONTROL 832
    CLINICAL AUDIT 833
    CONTINUING EDUCATION 833
    CASE REPORTING 833
    FURTHER READING 834
    APPENDIX 39.1: CALCULATIONS FOR THE DETERMINATION OF DOSE REQUIREMENTS TO ACHIEVE STEADY-STATE CONCENTRATIONS 835
    APPENDIX 39.2: METHOD of predicting dosage for phenytoin (assuming good compliance) (from Evans al 1992) 835
    Chapter 40. Poisoning 836
    INTRODUCTION 836
    AETIOLOGY OF POISONING 836
    TYPES OF LESION IN POISONING 837
    DIAGNOSIS AND MANAGEMENT OF POISONING: GENERAL PRINCIPLES 838
    SPECIFIC POISONS 842
    CONCLUSION 856
    FURTHER READING 856
    APPENDIX 40.1: POISONS CENTRES 856
    Chapter 41. Metabolic effects of tumours 857
    INTRODUCTION 857
    CARCINOID TUMOURS 857
    INTRODUCTION 862
    MEN1 863
    MEN2 868
    INTRODUCTION 874
    THEORIES OF ECTOPIC HORMONE PRODUCTION 874
    METABOLIC CHANGES IN MALIGNANCY 878
    HAEMATOLOGICAL SEQUELAE OF MALIGNANCY 883
    PARANEOPLASTIC SYNDROMES 884
    ENDOCRINE SEQUELAE OF TUMOURS AND THEIR TREATMENT 888
    CONCLUSION 890
    FURTHER READING 890
    Chapter 42. Tumour markers 891
    INTRODUCTION 891
    TUMOUR MARKERS IN THE MANAGEMENT OF SPECIFIC CANCERS 898
    CONCLUSION 912
    FURTHER READING 912
    Chapter 43. Molecular clinical biochemistry 914
    INTRODUCTION 914
    GENES AND GENE EXPRESSION 914
    THE TECHNIQUES OF GENETIC ANALYSIS 922
    THE APPLICATIONS OF DNA ANALYSIS 928
    DNA DIAGNOSTIC TESTS - SOME EXAMPLES 931
    GENE THERAPY 937
    CONCLUSION 939
    ACKNOWLEDGEMENTS 939
    GLOSSARY 940
    FURTHER READING 941
    Chapter 44. Free radicals 942
    INTRODUCTION 942
    DEFINITION AND SOURCES OF FREE RADICALS 942
    FUNCTIONS OF FREE RADICALS 944
    FREE RADICAL TOXICITY 946
    DEFENCE AGAINST FREE RADICALS 948
    METHODS FOR DETECTING FREE RADICALS 951
    CONCLUSION 951
    FURTHER READING 951
    Index 953