Here is the CMT Uptime check phrase
News
Events
Blog
Give
Publications
Software
Contact
About
People
Research
Services
Education
PUBLICATIONS
Proportional hazards regression with missing covariates
Little, Roderick J
; Chen, Hua Yun. (1999). Proportional hazards regression with missing covariates. Journal of the American Statistical Association. 94(447), 896(1).