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Roy-Byrne P, Stein M, Bystrisky A, Katon W.Roy-Byrne P, et al.J Am Board Fam Pract. 1998 Jul-Aug;11(4):282-90. doi: 10.3122/jabfm.11.4.282.J Am Board Fam Pract. 1998.PMID: 9719350