“…[61][62][63] Twenty-two of these 33 studies used a prospective randomized study design where wound healing outcomes were collected systematically using valid outcome measures and well over 80% of subjects completed the study protocol. [29][30][31]33,34,37,39,[42][43][44][45][48][49][50][51][52][53][54][55][56][57]59 Although data from a control group that did not receive EST was included in the report and analyses, eleven studies had key methodological flaws and were labeled "controlled trial" (CT) since they did not use a random allocation method 36,38,40 or involved fewer than 10 subjects per group. 28,35,38,41,46,47,58,60 The majority of the controlled studies involved the use of relatively small number of subjects and seldom were the large-scale multicenter trials coordinated by industry.…”