Obesity and sedentarism in the 21st century: what can be done and what must be done? - Gregorio Varela-Moreiras; Luis Fernando Alguacil Merino; Elena Alonso Aperte; Javier Aranceta Bartrina; José Manuel Ávila Torres; Susana Aznar Laín; Susana Belmonte Cortés; Lucio Cabrerizo García; María Ángeles Dal Re Saavedra; Alfonso Delgado Rubio; Marta Garaulet Aza; Pedro Pablo García Luna; et al. (Nutrición Hospitalaria)