Maria-Dolors Estrada, Luis Rajmil, Vicky Serra-Sutton, Cristian Tebé, Jordi Alonso, Michael Herdman, Anne W Riley, Christopher B Forrest, Barbara Starfield
Health Qual Life Outcomes. 2010; 8: 78. Published online 2010 August 2. doi: 10.1186/1477-7525-8-78