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Joos S, Bleidorn J, Haasenritter J, Hummers-Pradier E, Peters-Klimm F, Gágyor I; "Netzwerk Klinische Studien in der Allgemeinmedizin", gefördert von der Deutschen Forschungsgemeinschaft.Joos S, et al.Z Evid Fortbild Qual Gesundhwes. 2013;107(1):87-92. doi: 10.1016/j.zefq.2012.12.019. Epub 2013 Jan 16.Z Evid Fortbild Qual Gesundhwes. 2013.PMID: 23415348German.
Roos M, Blauth E, Steinhäuser J, Ledig T, Joos S, Peters-Klimm F.Roos M, et al. Among authors: joos s.Z Evid Fortbild Qual Gesundhwes. 2011;105(2):81-8. doi: 10.1016/j.zefq.2010.11.007. Epub 2010 Dec 13.Z Evid Fortbild Qual Gesundhwes. 2011.PMID: 21496775German.
Roos M, Steinhäuser J, Laux G, Joos S, Szecsenyi J.Roos M, et al. Among authors: joos s.Z Evid Fortbild Qual Gesundhwes. 2011;105(2):110-5. doi: 10.1016/j.zefq.2010.11.006. Epub 2010 Dec 3.Z Evid Fortbild Qual Gesundhwes. 2011.PMID: 21496779German.