title: A beginner's picture of research (IV). Experimental research methods.
authors.forename: H
authors.initials: H
authors.lastname: Rothwell
mesh_terms: D015400:Clinical Nursing Research / Q000379:methods* / Q000592:standards; D004993:Ethics, Nursing; D006801:Humans; D009721:Nurse Midwives / Q000523:psychology*; D016032:Randomized Controlled Trials as Topic / Q000379:methods* / Q000592:standards