Problems in the conduct of a randomised clinical trial.
Department of Epidemiology, Maastricht University, The Netherlands.
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ter Riet
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Kessels
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Knipschild
D000368:Aged; D001205:Ascorbic Acid / Q000627:therapeutic use*; D015982:Bias; D003131:Combined Modality Therapy; D006801:Humans; D003668:Pressure Ulcer / Q000000981:diagnostic imaging* / Q000188:drug therapy*; D016032:Randomized Controlled Trials as Topic / Q000379:methods* / Q000592:standards*; D015203:Reproducibility of Results; D012107:Research Design / Q000592:standards*; D014464:Ultrasonic Therapy / Q000379:methods*; D014463:Ultrasonography
D001205:Ascorbic Acid