[1] Univ Auckland, Liggins Inst, Auckland 1023, New Zealand
[2] Univ Southampton, Inst Dev Sci, Southampton, Hants, England
[3] Univ Cambridge, Subdept Anim Behav, Cambridge CB3 8AA, England
[4] UCL, Inst Child Hlth, London, England
[5] Aga Khan Univ, Dept Paediat, Karachi, Pakistan
[6] Russian Acad Med Sci, PK Anokhin Inst Normal Physiol, Dept Systemogenesis, Moscow, Russia
[7] Hop St Vincent de Paul, Dept Pediat Endocrinol, F-75674 Paris, France
[8] Hop St Vincent de Paul, INSERM, U561, F-75674 Paris, France
[9] Ctr Cellular & Mol Biol, Genome Res Grp, Hyderabad 500007, Andhra Pradesh, India
[10] Univ Cambridge, Fac Econ, Cambridge, England
[11] Univ Bristol, Dept Social Med, Bristol, Avon, England
[12] Harvard Univ, Dept Anthropol, Cambridge, MA 02138 USA
[13] Univ W Indies, Res Inst Trop Med, Kingston 7, Jamaica
[14] Swarthmore Coll, Dept Biol, Swarthmore, PA 19081 USA
[15] Tel Aviv Univ, Cohn Inst Hist & Philosophy Sci & Ideas, IL-69978 Tel Aviv, Israel
[16] Univ New Mexico, Dept Anthropol, Albuquerque, NM 87131 USA
[17] London Sch Hyg & Trop Med, Int Nutr Grp, London WC1, England
[18] Univ Sydney, Sch Biol Sci, Sydney, NSW 2006, Australia
[19] Univ Chile, Inst Nutr & Food Technol, Santiago, Chile
[20] Univ Costa Rica, Smithsonian Trop Res Inst, Sch Biol, San Pedro, Costa Rica