Cardiovascular System; Respiratory System; Urinary System; Alimentary System; Infectious Diseases; Disorders of Blood and Blood Forming Organs; Sexually Transmitted Diseases; Endocrine System; Tropical Diseases ;Nervous System; Collagen and Granulomatous Diseases of Uncertain Aetiology; Children Diseases; Metabolic Diseases; Vitamin Deficiency Diseases; Skin Diseases; Diseases of Bones and Joints; Psychological Diseases; Sexual Diseases; Diseases due to Chromosomal Abnormality; Disorders of Water, Electrolyte and Acid-Base Balance; Common Poisons and their effect on Human System; Inborn Errors of Metabolism; Clinical Immunology; Biological Data for Clinical Use