Study	Reason for exclusion
Garcia Leon 2003	Randomised controlled trial comparing LPSN and LUNA (Spanish). Patients had chronic pelvic pain which may or may not have included dysmenorrhoea. Approximately 60 to 80% of women in each treatment group had dysmenorrhoea at baseline. Unable to separate out data for women with dysmenorrhoea at baseline or at end of treatment.
Sutton 1994	Double blind, randomised trial, interventions were laparoscopic uterine nerve transection combined with vaporisation of endometriosis implants versus no treatment (expectant management only). Therefore data on pain relief as a result of LUNA could not be distinguished from pain relief as a result of the laser vaporisation.