Exploring the Role of Physical Activity in Mediating the Association between Educational Level and Health-Related Quality of Life in an Adult Lifespan Sample from Madeira Island - García-Mayor J.; Gouveia É.R.; Marques A.; De la Cruz-Sánchez E.; Moreno-Llamas A.; França C.; Gouveia B.R.; Ihle A. (International Journal of Environmental Research and Public Health, 2022)