''Our doctors served people day and night during the pandemic. We cannot repay their debt throughout or lives. Salute to all the doctors on National Doctors' Day who saved lives of lakhs of people and prevented their families from crumbling, '' Kejriwal tweeted in Hindi. 

As many as 730 doctors have succumbed to the novel coronavirus infection during the second wave, according to data available by the Indian Medical Association (IMA) in mid June. 

Bihar saw the maximum number of 115 such deaths, followed by Delhi at 109, Uttar Pradesh 79, West Bengal 62, Rajasthan 43, Jharkhand 39, and Andhra Pradesh 38, the data showed. 

According to the IMA, 748 doctors died in the first wave of the pandemic.