10.1371/journal.pone.0056194.g001 Mareile Niesser Mareile Niesser Hans Demmelmair Hans Demmelmair Thea Weith Thea Weith Diego Moretti Diego Moretti Astrid Rauh-Pfeiffer Astrid Rauh-Pfeiffer Marola van Lipzig Marola van Lipzig Wouter Vaes Wouter Vaes Berthold Koletzko Berthold Koletzko Wolfgang Peissner Wolfgang Peissner Flow chart of study selection process. Public Library of Science 2013 chemistry pathology mathematics 2013-02-14 02:25:46 Figure https://plos.figshare.com/articles/figure/_Flow_chart_of_study_selection_process_/158746 <p>Flow chart of study selection process.</p>