Danysh HE, Gilman RH, Wells JC, Pan WK, Zaitchik B, Gonzalvez G, Alvarez M, Checkley W. El Niño adversely affected childhood stature and lean mass in northern Peru. Climate Change Responses. 2014;1(7). doi: 10.1186/s40665-014-0007-z
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.