Medical-Surgical Dentistry Research Group (OMEQUI), Health Research Institute of Santiago de Compostela (IDIS), University of Santiago de Compostela (USC), 15782 Santiago de Compostela, Spain. pablo.martin.lancharro@sergas.es.
Department of Obstetrics and Gynecology, Clinic University Hospital of Santiago de Compostela, 15782 Santiago de Compostela, Spain. pablo.martin.lancharro@sergas.es.