“The Long-Term Effect of Premier Pay for Performance on Patient Outcomes,” by Ashish K. Jha, Karen E. Joynt, E. John Orav, and Arnold M. Epstein (Vol. 366, No. 17, April 26, 2012, p. 1606-1615).
www.nejm.org/doi/full/10.1056/NEJMsa1112351?query=TOC#t=abstract
