title: Drifting EGFR mutation.
authors.affiliation: Department of Internal Medicine, Division of Pulmonary Medicine, Infectious Diseases and Oncology, Nippon Medical School, Japan.
authors.forename: Rintaro
authors.initials: R
authors.lastname: Noro
authors.affiliation: Division of Chemotherapy and Clinical Research, National Cancer Center Research Institute, Japan. tyamada@ncc.go.jp.
authors.forename: Tesshi
authors.initials: T
authors.lastname: Yamada