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Philipp M, Kohnen R, Hiller KO.Philipp M, et al. Among authors: kohnen r.BMJ. 1999 Dec 11;319(7224):1534-8. doi: 10.1136/bmj.319.7224.1534.BMJ. 1999.PMID: 10591711Free PMC article.Clinical Trial.
Hentschel C, Kohnen R, Hauser G, Lindner M, Ernst E, Hahn EG.Hentschel C, et al. Among authors: kohnen r.Dtsch Med Wochenschr. 1996 Dec 13;121(50):1553-60. doi: 10.1055/s-2008-1043181.Dtsch Med Wochenschr. 1996.PMID: 8998927German.
Jünger M, Wollina U, Kohnen R, Rabe E.Jünger M, et al. Among authors: kohnen r.Curr Med Res Opin. 2004 Oct;20(10):1613-23. doi: 10.1185/030079904X4086.Curr Med Res Opin. 2004.PMID: 15462694Clinical Trial.