Development and Comparison of Reference Equations for the Six-Minute Walk Test in Spanish Healthy Adults Aged 45¿85 Years Elena Gimeno-Santos; Jordi Vilaró; Ane Arbilllaga-Etxarri; Beatriz Herrero-Cortina; Maria Antonia Ramon; Ana Balañá Corberó; Juan Carlos Fernández-Domínguez; Carlos Zárate-Tejero; Anael Barberan-Garcia; Tamara Del Corral; Begoña Jiménez-Reguera; Asenet López; Daniel López-Fernández; Patricia Madrid Treves; Roberto Martinez-Alejos; Gerard Muñoz; Antonio Ríos-Cortés; Ketty Ruiz-López; Marta San Miguel-Pagola; Natalia Sánchez-Cayado; Beatriz Valeiro; Marie Carmen Valenza; Gerald Valenza; Ana Beatriz Varas; Silvia Córdoba; Angeles Vega; Maria Linares; Eva María Madrid; Sonia Souto; Montserrat Vendrell; Judith Garcia-Aymerich;

Patterns of Physical Activity Progression in Patients With COPD Maria Koreny; Heleen Demeyer; Marta Benet; Ane Arbillaga-Etxarri; Eva Balcells; Anael Barberan-Garcia; Elena Gimeno-Santos; Nicholas S. Hopkinson; Corina De Jong; Niklas Karlsson; Zafeiris Louvaris; Michael I. Polkey; Milo A. Puhan; Roberto A. Rabinovich; Robert Rodríguez-Roisin; Pere Vall-Casas; Ioannis Vogiatzis; Thierry Troosters; Judith Garcia-Aymerich;

Association between occupational exposure and chronic obstructive pulmonary disease and respiratory symptoms in the Spanish population Eduardo Loeb; Jan-Paul Zock; Marc Miravitlles; Esther Rodríguez; Juan José Soler-Cataluña; Joan B. Soriano; Francisco García-Río; Pilar de Lucas; Inmaculada Alfageme; Ciro Casanova; José Miguel Rodríguez González-Moro; Julio Ancochea; Borja G. Cosío; Jaume Ferrer Sancho;