[Survival analysis using SAS software package].
Liu
Wei-wei
WW
Consulting Center of Biomedical Statistics, Academy of Military Medical Sciences, Beijing 100850, China.
Hu
Liang-ping
LP
D006506:Hepatitis A / Q000401:mortality; D006801:Humans; D012984:Software; D012985:Software Design; D016019:Survival Analysis; D001749:Urinary Bladder Neoplasms / Q000401:mortality