Wilson MR, Van Houtven CH, Stearns S, Clipp EC. Depression and missed work among informal caregivers of older individuals with dementia. J Fam Econ Issues. 2007;28(4):684-98.
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.