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Hess V, Salzberg M, Borner M, Morant R, Roth AD, Ludwig C, Herrmann R.Hess V, et al. Among authors: ludwig c.J Clin Oncol. 2003 Jan 1;21(1):66-8. doi: 10.1200/JCO.2003.04.029.J Clin Oncol. 2003.PMID: 12506172Clinical Trial.
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Hofer S, Viollier R, Ludwig C.Hofer S, et al. Among authors: ludwig c.Swiss Med Wkly. 2004 Feb 7;134(5-6):79-80. doi: 10.4414/smw.2004.10458.Swiss Med Wkly. 2004.PMID: 15113056Free article.