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Collison CH, Sinal SH, Jorizzo JL, Walker FO, Monu JU, Snyder J.Collison CH, et al. Among authors: sinal sh.South Med J. 1998 Jan;91(1):17-22. doi: 10.1097/00007611-199801000-00003.South Med J. 1998.PMID: 9438396