Funding for this research was provided by:
Department of Respiratory Medicine, Hyogo Prefectural Amagasaki General Medical Center (Not applicable)
Systematic Review Workshop Peer Support Group (Not applicable)
Article History
Received: 3 June 2020
Accepted: 19 July 2020
First Online: 25 July 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: All authors have no competing interests.