“…By 2016, there were 26 papers available as a potential evidence base to the 30 CPGs published between 2010–2015 [46,47,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,92,93,94,95,96,97,98,99,100,101,102]. Across 2017 to 2018, at least another nine studies have been published providing estimates of pain prevalence in people with COPD, which would be available to developers of future CPGs or of CPGs currently underway or being updated [6,19,20,26,31,32,33,34,35].…”