Trial results reporting: FDA Amendments Act Final Rule needs enforcement.

von Elm E Cochrane Switzerland, Center for Primary Care and Public Health, University of Lausanne, 1010 Lausanne, Switzerland. Electronic address: erik.vonelm@unisante.ch.
Meerpohl JJ Institute for Evidence in Medicine, Medical Center & Faculty of Medicine, University of Freiburg, Freiburg, Germany; Cochrane Germany, Cochrane Germany Foundation, Freiburg, Germany.