Bibliographical noteFunding Information:
PKB and RR planned the study design and interpreted data. PKB, RR and KS-G prepared the data set and drafted the manuscript. FG did the statistical analysis. PKB, KS-G, JFD, FG, TAF, GLU, PW, MAS, RV, CNA, JWK, AR and RR interpreted data and critically reviewed the manuscript. All authors approved the final manuscript. The authors also wish to acknowledge the support of the Biostatistics Core, Siteman Comprehensive Cancer Center and NCI Cancer Center Support Grant P30 CA091842.