Excellent sources for PICO information
pubmedhh.nlm.nih.gov/nlmd/pico/piconew.php
A PICO template to search Pubmed for clinical queries.
https://www.ebsco.com/blogs/health-notes/seven-steps-perfect-pico-search
https://tools-ovid-com.proxyhu.wrlc.org/ovidtools/pico.html