KOUTSKY, LAURA A.; HOLMES, KING K.; CRITCHLOW, CATHY W.; STEVENS, CLAIRE E.; PAAVONEN, JORMA; BECKMANN, ANNA MARIE; DeBOUEN, TIMOTHY A.; GALLOWAY, DENISE A.; VERNON, DEBRA; KIVIAT, NANCY B. Author Information
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Koutsky et al. (1993) studied this question.