Xian Y, Thomas L, Liang L, Federspiel JJ, Webb LE, Bushnell CD, Duncan PW, Schwamm LH, Stein J, Fonarow GC, Hoenig H, Montalvo C, George MG, Lutz BJ, Peterson ED, Bettger JP. Unexplained Variation for Hospitals' Use of Inpatient Rehabilitation and Skilled Nursing Facilities After an Acute Ischemic Stroke. Stroke. 2017 10; 48(10):2836-2842.