Table 1.
The sampled articles list for each of the medical databases and Wikipedia Portal Medicine. For the first 3 columns, the first term is the keyword phrase selection, whereas the bracketed term refers to the Wikipedia article name if it was not the same.
| MedlinePlus | NHS Direct | NORD | Wikipedia Portal Medicine |
| Barrett’s esophagus | Contact dermatitis | Very long chain acyl CoA dehydrogenase deficiency (very long-chain acyl-coenzyme A dehydrogenase deficiency) | Asthma |
| Menopausal hormone therapy (hormone replacement therapy (menopause)) | Oral thrush (oral candidiasis) | Fiber type disproportion (congenital fiber type disproportion) | Insulin |
| Living wills (advance health-care directive) | Epidermolysis bullosa | Congenital fibrodysplasia ossificans progressive (fibrodsysplasia ossificans progressiva) | Helicobacter pylori |
| AMD (muscular degeneration) | Indigestion | Pancreatic islet cell tumor (pancreatic cancer) | Forensic facial reconstruction |
| Methamphetamine | Artificial insemination | Dubin Johnson Syndrome | Metabolism |
| Osteonecrosis (avascular necrosis) | Rectal examination | L1 syndrome (MASA syndrome) | Influenza |
| ERT (hormone replacement therapy) | Rheumatic fever | Leukodystrophy, metachromatic (metachromatic leukodystrophy) | Sexually transmitted disease |
| Staphylococcal infections (Staphylococcus) | Vitiligo | Cerebral palsy | Female hysteria |
| Arthrography | Nasal polyps (nasal polyp) | Irritable bowel syndrome | Vacutainer |
| Arm injuries and disorders (median nerve palsy) | Bulimia | Mesothelioma | Nutrition |
| Implantable defibrillators (implantable cardioverter defibrillator) | Psychotherapy | Cataracts (cataract) | 2007 Bernard Mathews H5N1 outbreak |