[1] Stanford Univ, Stanford, CA 94305 USA
[2] Univ Glasgow, Glasgow, Lanark, Scotland
[3] Univ Bristol, Bristol, Avon, England
[4] Mapi Grp, Munich, Germany
[5] Novartis Biociencias SA, Sao Paulo, Brazil
[6] Novartis Pharmaceut, E Hanover, NJ USA
[7] Novartis Pharma AG, Basel, Switzerland