"Kundra, Pankaj" . "cc-by-nc-sa" . . "Padhihari, Priyadarshani" . "Saigal, Saurabh" . "Indian J Anaesth" . . "32773855" . "Hirolli, Divya" . "10.4103/ija.ija_396_20" . . . "PMC7293368" . . "COVID-19 mask: A modified anatomical face mask" . "Medline; PMC" . . . . "2020-05-23"^^ . "Panda, Rajesh" . "32773855" .