Received: 11 September 2020
Accepted: 4 February 2021
First Online: 10 February 2021
Ethics approval and consent to participate
: This study was approved by institutional ethics committees (institution, date, reference number): Hyogo Prefectural Amagasaki General Medical Center, Feb. 2015, July 2015 and Jan. 2017, 26–42, 27–6, and 28–129; Tenri Hospital, June 2015, 683; Shiga University of Medical Science, Apr. 2016, 27–238; Kameda General Medical Center, Aug. 2016, 16–062; Sakai City Medical Center, Feb. 2017, 30; National Hospital Organization Kinki-Chuo Chest Medical Center, Feb. 2017, 585; Kurashiki Central Hospital, Feb. 2017, 2441; Amagasaki Iryoseikyo Hospital, July 2017, 29–3; Seirei Mikatahara General Hospital, Aug. 2017, 17–23. Protocol registration: UMIN (ExternalRef removed), UMIN000017107 (4/15/2015), UMIN000025580 (1/10/2017). Written consent was obtained from the participants.
: Not applicable.
: Y. Kataoka, Y. Tsujimoto, M. Banno, and R. So are the founding members of SRWS-PSG, which is a non-profit, crowdfunded, and managed group. By using a portion of the framework of this WS, they help their supporters in producing papers on clinical research, including systematic reviews. Y. Tsujimoto is one of the directors of Cochrane JAPAN (ExternalRef removed, since Jun. 2019). The authors declare that they have no competing interests. The authors alone are responsible for the content and writing of the paper.