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Weckermann D, Holl G, Wagner T, Harzmann R.Weckermann D, et al. Among authors: holl g.Urologe A. 2007 Nov;46(11):1500-7. doi: 10.1007/s00120-007-1564-6.Urologe A. 2007.PMID: 17928984Review.German.
Freudenberg LS, Holl G, Müller SP, Rosenbaum-Krumme SJ, Sciuk J, Bockisch A.Freudenberg LS, et al. Among authors: holl g.Urologe A. 2009 Jan;48(1):19-25. doi: 10.1007/s00120-008-1754-x.Urologe A. 2009.PMID: 19037623Review.German.
Beuthien-Baumann B, Holthoff VA, Mäding P, Bergmann R, Pawelke B, Holl G, von Kummer R, Kotzerke J, van den Hoff J.Beuthien-Baumann B, et al. Among authors: holl g.Nuklearmedizin. 2012;51(6):239-43. doi: 10.3413/Nukmed-0457-12-01. Epub 2012 Jun 11.Nuklearmedizin. 2012.PMID: 22684530Clinical Trial.