@techreport{NBERw12836,
 title = "Altruism, Fertility, and the Value of Children: Health Policy Evaluation and Intergenerational Welfare",
 author = "Javier A. Birchenall and Rodrigo R. Soares",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "12836",
 year = "2007",
 month = "January",
 URL = "http://www.nber.org/papers/w12836",
}