Three-dimensional Conformal Radiation Planning Study for Limited-stage Small-cell Lung Cancer. - Okada Y; Zama T; Itonaga T; Mikami R; Okubo M; Sugahara S; Wada S; Kawamoto T; Ishida M; Nakai M; Abe K; Yoshimura M; et al. (Cancer diagnosis & prognosis, 2026)