Authors: Jaume Puig-Junoy and Beatriz González López-Valcárcel
Preventive Medicine, Vol. 48, No 5, 444--8, January, 2009Authors: Jaume Puig-Junoy and Beatriz González López-Valcárcel
Preventive Medicine, Vol. 48, No 5, 444--8, January, 2009© Barcelona Graduate School of Economics. All rights reserved.