Correction: Worldwide trends in volume and quality of published protocols of randomized controlled trials.

van Rosmalen, Belle V; Alldinger, Ingo; Cieslak, Kasia P; Wennink, Roos; Clarke, Mike; Ali, Usama Ahmed; Besselink, Marc G H · PLoS One · 2017

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Abstract

[This corrects the article DOI: 10.1371/journal.pone.0173042.].