1.
N Engl J Med
; 386(9): 809-811, 2022 Mar 03.
Article
in English
| MEDLINE | ID: covidwho-2229202
2.
Lancet
; 398(10296): 192-194, 2021 07 17.
Article
in English
| MEDLINE | ID: covidwho-1315563