Graham KL, Auerbach AD, Schnipper JL, Flanders SA, Kim CS, Robinson EJ, Ruhnke GW, Thomas LR, Kripalani S, Vasilevskis EE, Fletcher GS, Sehgal NJ, Lindenauer PK, Williams MV, Metlay JP, Davis RB, Yang J, Marcantonio ER, Herzig SJ. Preventability of Early Versus Late Hospital Readmissions in a National Cohort of General Medicine Patients. Ann Intern Med. 2018 06 05; 168(11):766-774.