Effects of the ECHO tele-mentoring program on Long COVID management in health facilities in India: A mixed-methods evaluation - Rajmohan Panda; Ritika Mukherjee; Kalpana Singh; Supriya Lahoti; Apoorva Karan Rai; Amit Verma; Sandeep Bhalla; Haresh Chandwani; Kumud Rai; Archisman Mohapatra (PLoS ONE, 2025)