Radiotherapy schedule
NPC
Eighty‐two NPC patients were randomly divided into two groups, a day group, and a night group, according to the corresponding period of different cycles of human oral mucosal cells during a day. Radiotherapy was scheduled for the patients in the two groups between 11:30 ~ 15:30 (S phase) at noon and 19:00 ~ 23:00 (M phase) at night, respectively.