@article{article, title  = {{Survival analysis part II: multivariate data analysis--an introduction to concepts and methods.}},

 url = {{http://eprints.whiterose.ac.uk/121558/ }},

 year = {{2003}},

 month = {{8}},

 author = {{Bradburn MJ and Clark TG and Love SB and Altman DG}},

 doi = {{10.1038/sj.bjc.6601119}},

 volume = {{89}},

 journal = {{Br J Cancer}},

 issue = {{3}},

 pages = {{431-436}},

 note = {{Accessed on 2024/09/20}}}