From *Departamento Científico, Fundación Kovacs, Palma de Mallorca, Spain; †Unidad de Bioestadística Clínica, Hospital Ramón y Cajal, Madrid, Spain; ‡Delegación Provincial de Asuntos Sociales de Granada, Spain; and §Centro de Salud Gran Capitán, Granada, Spain.
Acknowledgment date: June 23, 2006. First revision date: December 18, 2006. Acceptance date: January 8, 2007.
Supported in part by a grant from Programa de Apoyo a la Investigación, from the Instituto de Salud Carlos III, Madrid, Spain (to A.M.) and by a grant from Fondo de Investigación Sanitaria (PI050966) (to A.R.).
Other members of the Spanish Back Pain Research Network who authored this study are: José Luis Martín Ruíz, Carmen Fernández, Javier Olabe, Patricia Ibáñez Gómez, Víctor Abraira, Lourdes Ortigosa, Antonio López Bermejo, Mateo Seguí Díaz, Pablo Tobajas Ruber, Mariano Ortega, Luis González Luján, Luis Cuesta Villa, Violeta González Urzelai, Monserrat Cañellas Arsegol, Guillermo Ripoll Estela, Monserrat Núñez, Juan Femenías Rosselló, Manel Carro Presedo, Luis Alvarez Galovich, Elena Rodríguez Bohorquez, Ma Angeles Usero Martín, Ma Teresa León Espinosa de los Monteros, Agustín Martín Martín, Montserrat Calatayud, Jordi Troy Ferrarons, Loreto Palacio Elua, Catalina Mateu Serrra, Jaime Ripoll, Angels Sanjuan Castillo, Mario Gestoso, Margarita Martín Pino, Nicole Mufraggi Vechierinni, María Teresa Gil del Real, Jenny Moix, and Javier Zamora.
The manuscript submitted does not contain information about medical device(s)/drug(s).
Foundation funds were received from a commercial party related directly or indirectly to the subject of this manuscript. No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subject of this manuscript.
Supported by the Kovacs Foundation.
Address correspondence and reprint requests to Francisco M. Kovacs, MD, PhD, Departamento Científico, Fundación Kovacs, Paseo de Mallorca 36, E-07012 Palma de Mallorca, Spain; E-mail: kovacs@kovacs.org
