Finkelstein Yaron, Macdonald Erin M, Li Ping, Hutson Janine R, Juurlink David N
Department of Pediatrics, Hospital for Sick Children, Toronto, Ontario, Canada.
Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.
JAMA. 2014 Jun 4;311(21):2231-2. doi: 10.1001/jama.2014.839.