Effects of melatonin on the endometrial morphology and embryo implantation in rats - Dair, Elisabete Lílian; Simões, Ricardo Santos; Simões, Manuel Jesus; Romeu, Lucrecia Regina Gomes; Oliveira-Filho, Ricardo Martins; Haidar, Mauro Abi; Baracat, Edmund C.; Soares Jr., José Maria (Fertility and Sterility, 2008)