3972457 EFORT European Federation of National Associations of Orthopaedics and Traumatology 9 3972454 EFORT exogenous FSH ovarian reserve test 8 3972455 EFORT exogenous follicle-stimulating hormone ovarian reserve test 3 3972458 EFORT European Federation of National Associations of Orthopaedics 1 3972456 EFORT European Federation of Orthopaedics and Traumatology 1 3972453 EFORT exogenous FSH ORT 1