Notice of Retraction and Replacement: Colla et al. Association between Medicare accountable care organization implementation and spending among clinically vulnerable beneficiaries. JAMA Internal Medicine. 2016;176(8):1167-1175

JAMA Intern Med. 2017 Nov 1;177(11):1702-1703. doi: 10.1001/jamainternmed.2017.4130.
No abstract available