1. National Cancer Center Hospital, Tokyo, Japan
2. Present address: Aichi Cancer Center Hospital, Nagoya, Japan
3. Present address: Hokkaido University Hospital, Sapporo, Japan
4. Present address: Osaka Medical College Hospital, Osaka, Japan
5. Eli Lilly and Company, Indianapolis, IN, USA
6. Eli Lilly and Company, Bridgewater, NJ, USA
7. Eli Lilly Japan, Kobe, Japan
8. Present address: St Luke's International Hospital, Tokyo, Japan