Erratum to "A SAS macro for estimation of direct adjusted survival curves based on a stratified Cox regression model" [Computer Methods and Programs in Biomedicine 88 (2007) 95-101].

Xu Zhang Fausto R. Loberiza John P. Klein Mei-Jie Zhang Erratum to "A SAS macro for estimation of direct adjusted survival curves based on a stratified Cox regression model" [Computer Methods and Programs in Biomedicine 88 (2007) 95-101]. 313-314 2008 89 Computer Methods and Programs in Biomedicine 3 http://dx.doi.org/10.1016/j.cmpb.2007.11.003 db/journals/cmpb/cmpb89.html#ZhangLKZ08