Fig. 1

PRISMA 2020 flow diagram of study selection. Note: this diagram is derived from the PRISMA 2020 statement (Page MJ, McKenzie JE, Bossuyt PM, et al. The PRISMA 2020 statement: an updated guideline for reporting systematic reviews. BMJ. 2021;372:n71. Published 2021 Mar 29. https://doiorg.publicaciones.saludcastillayleon.es/10.1136/bmj.n71)