Rajeev Pareek, Bhagwati Chundawat, Kailash Chand Jat, Chitti Baby, and Nitika Sharma, “Prevalence of stress and associated changes in the personal habits of frontline healthcare workers during COVID-19 pandemic: A questionnaire based study”, Int. J. Heal. Clin. Res., vol. 4, no. 18, pp. 43–50, Oct. 2021.