The subjects of the River Scan Challenge are Mahiga and Guadalupe rivers. These rivers are very polluted because they receive all kinds of wastes; untreated wastewaters and solid wastes, from the urbanized environment. These rivers are crucial to the flood occurrences in the highly urbanized city of …

To evaluate the 5-year course of physical work capacity of participants with early symptomatic osteoarthritis (OA) of the hip and/or the knee; to identify trajectories and explore the relationship between trajectories and covariates. Methods In a prospective cohort study, physical work capacity was measured …