[1] Univ Alberta, Edmonton, AB, Canada
[2] Stanford Univ, Sch Med, Palo Alto, CA 94304 USA
[3] Univ Queensland, Dept Med, Brisbane, Qld, Australia
[4] Univ Bristol, Bristol, Avon, England
[5] MAPI Grp, Houten, Netherlands
[6] Novartis Pharmaceut, E Hanover, NJ USA
[7] Novartis Pharma AG, Basel, Switzerland