HAYASHIDA, K. Novel function of bovine milk-derived lactoferin on antinociception mediated by μ-opioid receptor in the rat spinal cord. Brain Research. 2003, 965, 239-245
VERCELLINI, P. A fonodotropine-releasing hormone agonist versus a low-dose oral contraceptive for pelvic pain associated with endometriosis. Fertil Steril. 1993, 60, 75-79