Hi everyone, Maybe this one pointed in the right direction: Fujita, M., Roth, E., Lo, Y.-J., Hurst, C., Vollner, J. and Kendell, A. (2012), In poor families, mothers' milk is richer for daughters than sons: A test of Trivers–Willard hypothesis in agropastoral settlements in Northern Kenya. Am. J. Phys. Anthropol., 149: 52–59. doi: 10.1002/ajpa.22092 Katinka Musavaya Harare, Zimbabwe Sent from my mobile From: Pat Young *********************************************** Archives: http://community.lsoft.com/archives/LACTNET.html To reach list owners: [log in to unmask] Mail all list management commands to: [log in to unmask] COMMANDS: 1. To temporarily stop your subscription write in the body of an email: set lactnet nomail 2. To start it again: set lactnet mail 3. To unsubscribe: unsubscribe lactnet 4. To get a comprehensive list of rules and directions: get lactnet welcome