Warttig SL, Forshaw MJ, South J, White AK. New, normative, English-sample data for the Short Form Perceived Stress Scale (PSS-4). J Health Psychol. 2013 Dec;18(12):1617-28. doi: 10.1177/1359105313508346
Seeger JD, West WA, Fernandez C, Rivero E. Pregnancy and pregnancy outcome among women with inflammatory skin diseases. Dermatology. 2006 Dec 1;214(1):32-9.
Wenham RM, Calingaert B, Ali S, McClean K, Whitaker R, Bentley R, Lancaster JM, Schildkraut J, Marks J, Berchuck A. Matrix metalloproteinase-1 gene promoter polymorphism and risk of ovarian cancer. J Soc Gynecol Investig. 2003 Sep 1;10(6):381-7.
Demuro-Mercon C, Rhodes T, Girman CJ, Vatten L. Male-pattern hair loss in Norwegian men: a community-based study. Dermatology. 2000 Jan 1;200(3):219-22.