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von Allmen, Regula Sybille; Weiss, Salome; Tevaearai, Hendrik; Kuemmerli, Christoph; Tinner, Christian; Carrel, Thierry; Schmidli, Jürg; Dick, Florian (2015). Completeness of Follow-Up Determines Validity of Study Findings: Results of a Prospective Repeated Measures Cohort Study. PLoS ONE, 10(10), e0140817. Public Library of Science 10.1371/journal.pone.0140817
