Pediatric Pain Letter, published in February, June and October, provides free, open-access, peer-reviewed commentaries on research and book reviews related to pain in infants, children and adolescents. The October 2021 issue (Vol. 23, No. 3) is now available at ppl.childpain.org. Articles can be viewed on screen or downloaded as PDF. Past issues back to 1996 are also posted and are searchable (English only): http://ppl.childpain.org/current.shtml