1. Drug Metabolism and Pharmacokinetics; Biopharmaceutical Assessment Core Function Unit; Eisai Co. Ltd, 1-3, 5-chome, Tokodai Tsukuba-shi Ibaraki 300-2635 Japan
2. Analysis group; Tsukuba Division; Sunplanet Co. Ltd, 1-3, 5-chome, Tokodai Tsukuba-shi Ibaraki 300-2635 Japan