Saltman Richard B, Vrangbaek Karsten, Lehto Juhani, Winblad Ulrika
Emory University, Department of Health Policy and Management, Rollins School of Public Health, 1518 Clifton Road NE, Atlanta, Georgia 30338, USA.
BMJ. 2012 Jul 24;345:e4994. doi: 10.1136/bmj.e4994.