“…Although they vary considerably in terms of their design, the findings remain inconsistent, with most studies showing some positive results in favour of acupuncture [4,[11][12][13][14][15], some showing negative results [16,17], and others showing neutral/equivocal findings [18,19]. An examination of these more recent studies reveals the continued existence of many of the methodological difficulties referred to in previous reviews [6,7].…”