AU - Hernandez AF, Granger CB TI - Prediction is very hard, especially about the future: Comment on “factors associated with 30-day readmission rates after percutaneous coronary intervention” PT - JOUR DP - 2012 TA - Archives of Internal Medicine pages = {117-119}, VI - 172 IP - 2 AID - 10.1001/archinternmed.2011.568 [doi] 4100 - http://dx.doi.org/10.1001/archinternmed.2011.568 SO - Archives of Internal Medicine January 23, 2012 172(2):117