Weighted Kaplan-Meier Statistics

Dear All,

I could not locate an implementation of the Weighted Kaplan-Meier
Statistics proposed by Pepe and Fleming, Biometrics. 1989
Jun;45(2):497-507 (http://www.ncbi.nlm.nih.gov/pubmed/2765634) in R.

I am wondering if anyone is aware of a R implementation of the test
statistics proposed in the paper.

Thanks,

Ritwik Sinha
ritwik.sinha at gmail.com | +12033042111 | http://ritwik.sinha.googlepages.com/