| 99 | History, Modern 1601- |
| 42 | History, Early Modern 1451-1600 |
| 33 | Italy |
| 27 | Humans |
| 24 | History, Ancient |
| 23 | History, Medieval |
| 20 | History of Medicine |
| 18 | France |
| 14 | Pediatrics (history) |
| 10 | Greece |
| 9 | History, 20th Century |
| 8 | Education, Medical (history) |
| 7 | Medicine |
| 7 | Knowledge |
| 7 | Historiography |
| 6 | Greek World |
| 6 | Germany |
| 6 | Cardiovascular System |
| 6 | Cardiology (history) |
| 5 | Travel (history) |
| 5 | Terminology as Topic |
| 5 | Switzerland |
| 5 | Spain |
| 5 | Psychology (history) |
| 5 | Neurology (history) |
| 5 | Nervous System |
| 5 | Male |
| 5 | Female |
| 4 | Psychiatry (history) |
| 4 | Physiology (history) |
| 4 | Philosophy (history) |
| 4 | Great Britain |
| 4 | Expeditions (history) |
| 4 | Anatomy (history) |
| 3 | Science (history) |
| 3 | Papillomavirus Infections (virology) |
| 3 | Molecular Sequence Data |
| 3 | Leukemia (history) |
| 3 | Hospitals (history) |
| 3 | History, 19th Century |
| 3 | Embryology (history) |
| 3 | Cultural Characteristics |
| 3 | Botany (history) |
| 2 | United States |
| 2 | USSR |
| 2 | Stroke (etiology) |
| 2 | Social Behavior |
| 2 | Science |
| 2 | Religion and Psychology |
| 2 | Religion and Medicine |
| 2 | Race Relations (psychology) |
| 2 | Race Relations (legislation & jurisprudence) |
| 2 | Race Relations (history) |
| 2 | Psychosomatic Medicine (history) |
| 2 | Prospective Studies |
| 2 | Professional Competence |
| 2 | Prejudice |
| 2 | Plague (history) |
| 2 | Philosophy, Medical (history) |
| 2 | Pharmacy (history) |
| 2 | Periodicals as Topic (history) |
| 2 | Parasitology (history) |
| 2 | Papillomaviridae (genetics) |
| 2 | Obstetrics (history) |
| 2 | Molecular Biology (history) |
| 2 | Literature (history) |
| 2 | Hydroxymethylglutaryl-CoA Reductase Inhibitors (therapeutic use) |
| 2 | Homosexuality (history) |
| 2 | Genome, Viral |
| 2 | Forensic Medicine (history) |
| 2 | Ethnic Groups (psychology) |
| 2 | Ethnic Groups (legislation & jurisprudence) |
| 2 | Ethnic Groups (history) |
| 2 | Ethnic Groups (ethnology) |
| 2 | Ethnic Groups (education) |
| 2 | Equipment and Supplies (history) |
| 2 | Echocardiography, Transesophageal |
| 2 | China |
| 2 | Child Welfare (history) |
| 2 | Chemistry (history) |
| 2 | Cell Biology (history) |
| 2 | Brain Ischemia (etiology) |
| 2 | Biology (history) |
| 2 | Biochemistry (history) |
| 2 | Base Sequence |
| 2 | Argentina |
| 1 | Yugoslavia |
| 1 | Yellow Fever (history) |
| 1 | World War II |
| 1 | Witchcraft (psychology) |
| 1 | Witchcraft (history) |
| 1 | Waste Water (virology) |
| 1 | Virtues |
| 1 | Viral Proteins (genetics) |
| 1 | Viral Proteins (chemistry) |
| 1 | User-Computer Interface |
| 1 | Urology (history) |
| 1 | Typhus, Epidemic Louse-Borne (history) |
| 1 | Turkey |
| 1 | Tuberculosis (history) |
| 1 | Treatment Outcome |
| 1 | Toxicology (history) |
| 1 | Time Factors |
| 1 | Threshold Limit Values |
| 1 | Thinking |
| 1 | Therapeutics (history) |
| 1 | Thailand |
| 1 | Systems Biology |
| 1 | Symbolism |
| 1 | Sweden |
| 1 | Sweden (epidemiology) |
| 1 | Surveys and Questionnaires |
| 1 | Surgical Procedures, Operative |
| 1 | Sulfonamides (therapeutic use) |
| 1 | Sulfonamides (administration & dosage) |
| 1 | Sudden Infant Death (prevention & control) |
| 1 | Sudden Infant Death (epidemiology) |
| 1 | Stroke (prevention & control) |
| 1 | Stroke (pathology) |
| 1 | Stroke (drug therapy) |
| 1 | Stroke (diagnosis) |
| 1 | State Medicine (organization & administration) |
| 1 | Sports Medicine (history) |
| 1 | Spiritualism |
| 1 | Speech Disorders (history) |
| 1 | Socioeconomic Factors |
| 1 | Social Welfare (trends) |
| 1 | Social Welfare (history) |
| 1 | Social Welfare (economics) |
| 1 | Social Dominance |
| 1 | Social Control Policies (legislation & jurisprudence) |
| 1 | Social Control Policies (history) |
| 1 | Social Control Policies (economics) |
| 1 | Social Conditions (legislation & jurisprudence) |
| 1 | Social Conditions (history) |
| 1 | Social Conditions (economics) |
| 1 | Social Change |
| 1 | Skin (virology) |
| 1 | Singapore |
| 1 | Sewage (virology) |
| 1 | Severe Acute Respiratory Syndrome (prevention & control) |
| 1 | Sequence Analysis |
| 1 | Sequence Analysis, DNA |
| 1 | Semantics |
| 1 | Self Concept |
| 1 | Safety Management |
| 1 | Russia |
| 1 | Rosuvastatin Calcium |
| 1 | Rosuvastatin Calcium (therapeutic use) |
| 1 | Rome |
| 1 | Risk |
| 1 | Respiratory Tract Diseases (virology) |
| 1 | Respiratory Tract Diseases (genetics) |
| 1 | Research |
| 1 | Research Design |
| 1 | Research Design (standards) |
| 1 | Research (history) |
| 1 | Reproduction |
| 1 | Relaxation Therapy |
| 1 | Radium (history) |
| 1 | Radioisotopes (history) |
| 1 | Radioisotopes (economics) |
| 1 | Radiobiology (history) |
| 1 | Radioactive Tracers |
| 1 | Radiation Protection (history) |
| 1 | Radiation Protection (economics) |
| 1 | RNA Phages |
| 1 | Quality Improvement (ethics) |
| 1 | Pyrimidines (therapeutic use) |
| 1 | Pyrimidines (administration & dosage) |
| 1 | Public Policy |
| 1 | Public Health |
| 1 | Public Health (trends) |
| 1 | Public Health (methods) |
| 1 | Public Health (education) |
| 1 | Public Health (classification) |
| 1 | Professional Practice (standards) |
| 1 | Printing (history) |
| 1 | Predictive Value of Tests |
| 1 | Power (Psychology) |
| 1 | Portraits as Topic (history) |
| 1 | Population Groups (psychology) |
| 1 | Population Groups (legislation & jurisprudence) |
| 1 | Population Groups (history) |
| 1 | Population Groups (ethnology) |
| 1 | Population Groups (education) |
| 1 | Polymerase Chain Reaction |
| 1 | Politics |
| 1 | Poisoning (history) |
| 1 | Plaque, Atherosclerotic |
| 1 | Plaque, Atherosclerotic (drug therapy) |
| 1 | Plaque, Atherosclerotic (complications) |
| 1 | Phylogeny |
| 1 | Philosophy, Medical |
| 1 | Pharmacology (history) |
| 1 | Persons With Hearing Impairments (psychology) |
| 1 | Personality |
| 1 | Periodicals as Topic |
| 1 | Perception |
| 1 | Pathology (history) |
| 1 | Paternalism |
| 1 | Parenting |
| 1 | Papillomavirus Infections (genetics) |
| 1 | Papillomaviridae (isolation & purification) |
| 1 | Outcome Assessment (Health Care) (history) |
| 1 | Orthopedics (history) |
| 1 | Occupational Medicine (history) |
| 1 | Occupational Exposure (history) |
| 1 | Occupational Diseases (history) |
| 1 | Occultism (history) |
| 1 | Nutritional Physiological Phenomena |
| 1 | Nursing |
| 1 | Nursing Process |
| 1 | Nurse-Patient Relations |
| 1 | Nurse's Role |
| 1 | Nurse Practitioners |
| 1 | Nurse Practitioners (psychology) |
| 1 | Neurosurgery |
| 1 | Netherlands |
| 1 | Neoplasms (history) |
| 1 | Naval Medicine (history) |
| 1 | National Socialism (history) |
| 1 | Narration (history) |
| 1 | Musculoskeletal Diseases (history) |
| 1 | Mucous Membrane (virology) |
| 1 | Morals |
| 1 | Molecular Sequence Annotation |
| 1 | Military Medicine (history) |
| 1 | Middle Aged |
| 1 | Microscopy (history) |
| 1 | Microbiology (history) |
| 1 | Metagenomics |
| 1 | Mental Healing |
| 1 | Mental Disorders (therapy) |
| 1 | Mental Disorders (history) |
| 1 | Mental Disorders (drug therapy) |
| 1 | Mental Disorders (diagnosis) |
| 1 | Medicine, Traditional |
| 1 | Medicine, Chinese Traditional |
| 1 | Medical Errors (prevention & control) |
| 1 | Maximum Allowable Concentration |
| 1 | Malaria (history) |
| 1 | Magic (history) |
| 1 | Linear Models |
| 1 | Life Change Events |
| 1 | Licensure (history) |
| 1 | Libraries (history) |
| 1 | Learning |
| 1 | Leadership |
| 1 | Judaism (history) |
| 1 | Japan |
| 1 | Intracranial Embolism (prevention & control) |
| 1 | Intracranial Embolism (etiology) |
| 1 | Intracranial Embolism (diagnosis) |
| 1 | Interprofessional Relations |
| 1 | Interpersonal Relations |
| 1 | Internet |
| 1 | Infection (history) |
| 1 | Infant |
| 1 | Industry (history) |
| 1 | Indians, North American (history) |
| 1 | India |
| 1 | Iceland |
| 1 | Hypercholesterolemia (drug therapy) |
| 1 | Hypercholesterolemia (complications) |
| 1 | Hygiene (history) |
| 1 | Hydroxymethylglutaryl-CoA Reductase Inhibitors (administration & dosage) |
| 1 | Human Development |
| 1 | History, 18th Century |
| 1 | History, 16th Century |
| 1 | Hierarchy, Social |
| 1 | Hematology (history) |
| 1 | Health |
| 1 | Health Policy |
| 1 | Health Knowledge, Attitudes, Practice |
| 1 | Growth |
| 1 | Greek World (history) |
| 1 | Government |
| 1 | Germany, West |
| 1 | Geriatrics (history) |
| 1 | Genomics |
| 1 | General Surgery (history) |
| 1 | Gastroenterology (history) |
| 1 | Gammapapillomavirus (genetics) |
| 1 | Fluorobenzenes (therapeutic use) |
| 1 | Fluorobenzenes (administration & dosage) |
| 1 | Financing, Government |
| 1 | Feces (virology) |
| 1 | Favism (history) |
| 1 | Ethics, Medical |
| 1 | Epidemiology (history) |
| 1 | England |
| 1 | Encephalitis (history) |
| 1 | Emergency Service, Hospital (organization & administration) |
| 1 | Embolism (complications) |
| 1 | Elements, Radioactive (history) |
| 1 | Elements, Radioactive (economics) |
| 1 | Education, Special (methods) |
| 1 | Education of Hearing Disabled |
| 1 | Drug Discovery |
| 1 | Disorders of Sex Development (history) |
| 1 | Disease Outbreaks (prevention & control) |
| 1 | Digestive System |
| 1 | Diet (history) |
| 1 | Diarrhea (virology) |
| 1 | Diagnostic Tests, Routine (history) |
| 1 | Diagnosis |
| 1 | Delivery of Health Care (standards) |
| 1 | Delivery of Health Care (ethics) |
| 1 | Deafness (psychology) |
| 1 | Databases, Genetic |
| 1 | Culture |
| 1 | Cultural Diversity |
| 1 | Cross-Over Studies |
| 1 | Crisis Intervention |
| 1 | Counseling (standards) |
| 1 | Continental Population Groups (psychology) |
| 1 | Continental Population Groups (legislation & jurisprudence) |
| 1 | Continental Population Groups (history) |
| 1 | Continental Population Groups (ethnology) |
| 1 | Continental Population Groups (education) |
| 1 | Concept Formation |
| 1 | Communication |
| 1 | Colonialism (history) |
| 1 | Clinical Competence |
| 1 | Christianity (history) |
| 1 | Cholesterol, LDL (blood) |
| 1 | Cholera (history) |
| 1 | Child |
| 1 | Chi-Square Distribution |
| 1 | Carcinogens (history) |
| 1 | Byzantium |
| 1 | Brain Ischemia (prevention & control) |
| 1 | Brain Ischemia (pathology) |
| 1 | Brain Ischemia (drug therapy) |
| 1 | Brain Ischemia (diagnosis) |
| 1 | Biophysics (history) |
| 1 | Biomedical Research (history) |
| 1 | Biomarkers (blood) |
| 1 | Bibliometrics |
| 1 | Bibliography as Topic |
| 1 | Bezoars (history) |
| 1 | Betapapillomavirus (isolation & purification) |
| 1 | Belgium |
| 1 | Austria |
| 1 | Australia |
| 1 | Atherosclerosis (ultrasonography) |
| 1 | Atherosclerosis (drug therapy) |
| 1 | Atherosclerosis (complications) |
| 1 | Atherosclerosis (blood) |
| 1 | Asia, Southeastern (ethnology) |
| 1 | Arthritis (history) |
| 1 | Art (history) |
| 1 | Aortic Diseases (ultrasonography) |
| 1 | Aortic Diseases (drug therapy) |
| 1 | Aortic Diseases (complications) |
| 1 | Aortic Diseases (blood) |
| 1 | Aorta, Thoracic (ultrasonography) |
| 1 | Aorta, Thoracic (metabolism) |
| 1 | Aorta (pathology) |
| 1 | Antipsychotic Agents (therapeutic use) |
| 1 | Antipsychotic Agents (history) |
| 1 | Anthropology, Cultural (history) |
| 1 | Anthropology, Cultural (education) |
| 1 | Anemia (history) |
| 1 | Alphapapillomavirus (isolation & purification) |
| 1 | Allergy and Immunology (history) |
| 1 | Aged |
| 1 | Aged, 80 and over |
