\begin{thebibliography}{1}
\providecommand{\natexlab}[1]{#1}
\providecommand{\url}[1]{\texttt{#1}}
\expandafter\ifx\csname urlstyle\endcsname\relax
  \providecommand{\doi}[1]{doi: #1}\else
  \providecommand{\doi}{doi: \begingroup \urlstyle{rm}\Url}\fi

\bibitem[Page et~al.(2021)Page, McKenzie, Bossuyt, et~al.]{prisma2020}
Matthew~J. Page, Joanne~E. McKenzie, Patrick~M. Bossuyt, et~al.
\newblock The prisma 2020 statement: an updated guideline for reporting
  systematic reviews.
\newblock \emph{BMJ}, 372:\penalty0 n71, 2021.
\newblock \doi{10.1136/bmj.n71}.

\end{thebibliography}