%0 Journal Article
%1 fernandezvillalobos2021effect
%A Fernandez Villalobos, N V
%A Ott, J J
%A Klett-Tammen, C J
%A Bockey, A
%A Vanella, P
%A Krause, G
%A Lange, B
%D 2021
%J Syst Rev
%K gkrause_1
%N 1
%P 194
%R 10.1186/s13643-021-01732-3
%T Effect modification of the association between comorbidities and severe course of COVID-19 disease by age of study participants: a systematic review and meta-analysis
%U /brokenurl#10.1186/s13643-021-01732-3
%V 10