Systematic reviews. Some examples.
Reviewing the literature is a scientific inquiry that needs a clear design to preclude bias. It is a real enterprise if one aims at completeness of the literature on a certain subject. Going through refereed English language journals is not enough. On line databases are helpful, but mainly as a starting point. This article gives examples of systematic reviews on vitamin C and the common cold, pyridoxine against the premenstrual syndrome, homeopathy, and physiotherapy.
Knipschild
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Department of Epidemiology, University of Limburg, Maastricht, Netherlands.
D001205:Ascorbic Acid; D002986:Clinical Trials as Topic; D003139:Common Cold / Q000517:prevention & control; D000529:Complementary Therapies; D016206:Databases, Bibliographic; D006801:Humans; D016247:Information Storage and Retrieval; D016239:MEDLINE; D026741:Physical Therapy Modalities; D012196:Review Literature as Topic
D001205:Ascorbic Acid