Development and implementation of a sustainable COVID-19 training package for healthcare workers: Experience from a teaching hospital of North India oleh Amir Maroof Khan, Somdatta Patra, Anil K Jain, S V Madhu, Ashok Saxena, Anju Aggarwal, Amita Suneja, Asha Tyagi, Rajnish Avasthi, Narendra P Singh, Dheeraj Shah, Anjana Dhall, Rajesh Kalra, Rajesh Arora, Sanjay Gupta, Neelam Vaney