Acquavella J, Weinhandl E, Bradbury B, Brookhart A, Sturmer T, Rothman KJ. Confounding by indication studying epoetin and mortality. Poster presented at the 25th ICPE International Conference on Pharmacoepidemiology & Therapeutic Risk Management; August 2009. Providence, RI. [abstract] Pharmacoepidemiol Drug Saf. 2009 Aug 16; 18(Suppl 1):S28.