The European Society of Human Reproduction and Embryology guideline for the diagnosis and treatment of endometriosis: an electronic guideline implementability appraisal mā de Sutter Petra, Simons Arnold HM, Nygren Karl G, Bergh Christina, Hermens Rosella PMG, Dunselman Gerard AJ, D'Hooghe Thomas M, Nelen Willianne LDM, van Dijk Lotte JEW, Marshall Catherine, Burgers Jako S, Kremer Jan AM