Diagnoses and timing of 30-day readmissions after hospitalization for heart failure, acute myocardial infarction, or pneumonia - Dharmarajan, K; Hsieh, AF; Lin, Z; Bueno, H; Ross, JS; Horwitz, LI; Barreto-Filho, JA; Kim, N; Bernheim, SM; Suter, LG; Drye, EE; Krumholz, HM (JAMA, 2013)