Social determinants and risk factors associated with non-communicable diseases among urban population in Nepal: A comparative study of poor, middle and rich wealth categories of urban population using STEPS survey - Sampurna Kakchapati; Raju Neupane; Kriti Sagar Baral; Grishu Shrestha; Deepak Joshi; Bryony Dawkins; Tim Ensor; Helen Elsey; Sushil Chandra Baral (PLoS ONE, 2025)