Understanding the impact, reach and implementation of a health systems intervention to improve diabetes and hypertension care in pluralistic urban public primary care in Bangladesh: a study protocol. - Barua D; Hicks JP; Elsey H; Das M; Anee US; Jahan NB; Islam K; Chowdhury R; Ali M; Ebenso B; Ensor T; Huque R (BMJ open, 2026)