[1] SUNY Binghamton, Lab Biomed & Neurosci, Binghamton, NY USA
[2] SUNY Binghamton, Lab Evolutionary Anthropol & Hlth, Binghamton, NY USA
[3] SUNY Binghamton, Dept Anthropol, Binghamton, NY USA
[4] SUNY Binghamton, Dept Biol Sci, Binghamton, NY USA
[5] McGill Univ, Douglas Hosp, Res Ctr, Psychosocial Res Div, Montreal, PQ, Canada
[6] Temple Univ, Dept Anthropol, Philadelphia, PA 19122 USA
[7] Minist Hlth, Port Vila, Vanuatu
[8] Karolinska Inst, Dept Microbiol, Isl Malaria Grp, Stockholm, Sweden
[9] Osaka City Univ, Grad Sch Med, Dept Parasitol, Osaka 558, Japan
[10] Nagasaki Univ, Inst Trop Med, Nagasaki 852, Japan