Study types and study issues in clinical medicine.
Koller
Michael
M
Center for Clinical Studies, University Hospital Regensburg, D-93042 Regensburg, Germany. michael.koller@klinik.uni-regensburg.de
Lorenz
Wilfried
W
D035843:Biomedical Research / Q000379:methods*; D002986:Clinical Trials as Topic / Q000379:methods*; D019317:Evidence-Based Medicine; D017408:Guidelines as Topic; D006801:Humans