NEW: Impact of disability on quality of life
Guest editor: Agnieszka Sozańska
NEW: Aging and disability
Guest editors: Chengxuan Qiu & Laura Coll
NEW: Promoting physical activity: challenges, opportunities, and evidence-based strategies for active lifestyles
Guest editors: Kwok Ng and Ferdinand
Salonna
Progress on reducing opioid-related harms
Guest editors: Tyler Bartholomew, Eugenia Oviedo-Joekes and James A. Swartz