Akashi-Ronquest N. The impact of biological preferences on parental investments in children and step-children. Rev Econ Househ. 2009 Mar 1;7(1):59-81.
Van Houtven CH, Wilson MR, Clipp EC. Informal care intensity and caregiver drug utilization. Rev Econ Househ. 2005;3(4):415-33.
Clarkson T, Anthony MS, Hughes C. Estrogenic soybean isoflavones and chronic disease: risks and benefits. Trends Endocrinol Metab. 1995 Jan;6(1):11-6.