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Hunger M, Schwarzkopf L, Heier M, Peters A, Holle R; KORA Study Group.Hunger M, et al. Among authors: schwarzkopf l.BMC Health Serv Res. 2013 Jan 3;13:1. doi: 10.1186/1472-6963-13-1.BMC Health Serv Res. 2013.PMID: 23286781Free PMC article.
Schwarzkopf L, Menn P, Leidl R, Graessel E, Holle R.Schwarzkopf L, et al.BMC Health Serv Res. 2013 Jan 3;13:2. doi: 10.1186/1472-6963-13-2.BMC Health Serv Res. 2013.PMID: 23286826Free PMC article.