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Both clinical trial register and electronic bibliographic database searches were needed to identify randomized clinical trials for systematic reviews: an evaluation study.
Kaul T, Colombijn JMT, Vernooij RWM, Spijker R, Idema DL, Huis In 't Veld LF, Damen JAA, Hooft L. Kaul T, et al. Among authors: huis in t veld lf. J Clin Epidemiol. 2024 Feb 24;169:111300. doi: 10.1016/j.jclinepi.2024.111300. Online ahead of print. J Clin Epidemiol. 2024. PMID: 38402998 Free article.