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Trial Registration Numbers Are Underreported in Biomedical Publications
van de Wetering FT,
Scholten RJPM,
Haring T,
Clarke M,
Hooft L
(2012)
Trial Registration Numbers Are Underreported in Biomedical Publications.
PLOS ONE 7(11): e49599.
https://doi.org/10.1371/journal.pone.0049599