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Charles SC, Warnecke RB, Nelson A, Pyskoty CE.Charles SC, et al. Among authors: warnecke rb.Behav Med. 1988 Winter;14(4):148-55. doi: 10.1080/08964289.1988.9935139.Behav Med. 1988.PMID: 3256367
Wilbert JR, Charles SC, Warnecke RB, Lichtenberg R.Wilbert JR, et al. Among authors: warnecke rb.IMJ Ill Med J. 1987 Jan;171(1):23-7.IMJ Ill Med J. 1987.PMID: 2879820No abstract available.