title: Staying on task: challenges of global physical activity surveillance.
authors.affiliation: Division of Nutrition, Physical Activity, and Obesity, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Pratt
authors.forename: Janet E
authors.initials: JE
authors.lastname: Fulton
mesh_terms: D015444:Exercise; D014943:Global Health; D006293:Health Promotion; D006801:Humans; D011159:Population Surveillance