[1] INNSZ, Mexico City, DF, Mexico
[2] Australian Inst Weight Control, Bedford Pk, SA, Australia
[3] St Olavs Hosp, Trondheim, Norway
[4] Australian Inst Weight Control, Baulkham Hills, Australia
[5] Univ Basel Hosp, CH-4031 Basel, Switzerland
[6] EnteroMedics Inc, St Paul, MN USA
[7] Univ Minnesota, Minneapolis, MN USA