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Savović, Jelena; Jones, Hayley E; Altman, Douglas G; Harris, Ross J; Jüni, Peter; Pildal, Julie; Als-Nielsen, Bodil; Balk, Ethan M; Gluud, Christian; Gluud, Lise Lotte; Ioannidis, John P A; Schulz, Kenneth F; Beynon, Rebecca; Welton, Nicky J; Wood, Lesley; Moher, David; Deeks, Jonathan J; Sterne, Jonathan A C (2012). Influence of reported study design characteristics on intervention effect estimates from randomized, controlled trials. Annals of internal medicine, 157(6), pp. 429-38. Philadelphia, Pa.: American College of Physicians