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Mantell JE, Hoffman S, Exner TM, Stein ZA, Atkins K.Mantell JE, et al. Among authors: exner tm.Perspect Sex Reprod Health. 2003 Mar-Apr;35(2):71-8. doi: 10.1363/3507103.Perspect Sex Reprod Health. 2003.PMID: 12729136