Norquist JM, Girman C, Fehnel S, Demuro-Mercon C, Santanello N. Choice of recall period for patient-reported outcome (PRO) measures: criteria for consideration. Qual Life Res. 2012 Aug 1;21(6):1016-20.
Nørgaard M, Wogelius P, Pedersen L, Rothman KJ, Sørensen HT. Maternal use of oral contraceptives during early pregnancy and risk of hypospadias in male offspring. Urology. 2009 Sep;74(3):583-7.
Naslund M, Gilsenan AW, Midkiff KD, Wolford E, Bown A, Wang J. The prevalence of luts and prostate enlargement in the primary care setting. Poster presented at the Annual Meeting of the American Urological Association; 2007.
Sorensen HT, Pedersen L, Norgaard M, Wogelius P, Rothman KJ. Maternal asthma, preeclampsia and risk of hypospadias. Epidemiology. 2005 Nov 1;16(6):806-7.