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Kaiser LR, Urmacher C.Kaiser LR, et al. Among authors: urmacher c.Cancer. 1990 Aug 15;66(4):789-95. doi: 10.1002/1097-0142(19900815)66:4<789::aid-cncr2820660432>3.0.co;2-p.Cancer. 1990.PMID: 2167144Review.
Kemeny N, Seiter K, Martin D, Urmacher C, Niedzwiecki D, Kurtz RC, Costa P, Murray M.Kemeny N, et al. Among authors: urmacher c.Ann Intern Med. 1991 Dec 15;115(12):946-51. doi: 10.7326/0003-4819-115-12-946.Ann Intern Med. 1991.PMID: 1824554Clinical Trial.