[1] Natl Canc Ctr, Dept Thorac Oncol, Tokyo, Japan
[2] Wakayama Med Univ, Dept Internal Med, Wakayama, Japan
[3] Pfizer Inc, New York, NY USA
[4] Pfizer Japan Inc, Tokyo, Japan
[5] Pfizer Inc, Tadworth, England
[6] Univ Michigan, Sch Publ Hlth, Ann Arbor, MI 48109 USA