Garegnani, Luis IgnacioMadrid, EvaMeza, Nicolás2022-11-302022-11-302021Garegnani LI, Madrid E, Meza N. BMJ Evidence-Based Medicine Epub ahead of print: [please include Day Month Year]. doi:10.1136/bmjebm-2021-111678http://repositoriobibliotecas.uv.cl/handle/uvscl/7401This article is made freely available for use in accordance with BMJ’s website terms and conditions for the duration of the covid-19 pandemic or until otherwise determined by BMJ. You may use, download and print the article for any lawful, non- commercial purpose (including text and data mining) provided that all copyright notices and trade marks are retained.Articulo10.1136/bmjebm-2021-111678