Gregoriou 1997.

Methods	Randomisation: by sequential numerical allocation to a randomisation list before commencing trial
Participants	Number of women: 40  Age: Mean age of group 1: 28.3 years and mean age of group 2: 29.1 years Inclusion criteria:  minimum of 4 endometriotic lesions endometriotic symptoms and pelvic pain graded at least 3 (severe) negative cervical smear Exclusion criteria:  smoking medications that might affect bone metabolism medical conditions that could affect bone metabolism Setting: Greece Timing: not stated
Interventions	Group 1: leuprolide acetate depot 3.75 mg IM every 4 weeks versus Group 2: leuprolide acetate depot 3.75 mg every 4 weeks + 1.25 mg daily oral conjugated equine oestrogens on days 1 to 25 and 5 mg oral medroxyprogesterone acetate on days 16‐25
Outcomes	Bone mineral density
Notes	Intention‐to‐treat analysis: not stated Sample size calculation: not stated  Funding: not stated This abstract did not contain enough information to make a proper decision about in‐/exclusion.