Bibliografia

1. Serrano-Aquilar P, Kovacs FM, Cabrera-Hernàndez JM, Ramos-Goñ JM, Garciá-Pérez L. Avoidable costs of physical treatments for chronic back, neck and shoulder pain within the Spanish National Health Service: a cross-sectional study. BMC Musculoskelet Disord 2011; 12: 287.

2. Martin BI, Deyo RA, Mirza SK et al. Expenditures and health status among adults with back and neck problems. J Am Med Assoc 2008; 299(6): 656-64.