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[Is the school entrance examination a door opener for health sciences research? : Analyzing study participation of hard-to-reach groups].
Wahl S, Kreffter K, Frölich S, Müller-Thur K, Dragano N, Göbels K, Poschkamp T, Schäfer M, Weyers S. Wahl S, et al. Among authors: kreffter k. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz. 2018 Oct;61(10):1236-1241. doi: 10.1007/s00103-018-2808-x. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz. 2018. PMID: 30191267 Review. German.