1. Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Odontology University of Santiago de Compostela Santiago de Compostela Spain
2. Health Research Institute of Santiago de Compostela (IDIS), ORALRES Group Universidade de Santiago de Compostela Santiago de Compostela Spain
3. Department of Gynecology & Obstetrics Valdeorras Hospital El Barco de Valdeorras Spain
4. Primary Health Care Unit, EOXI Ourense, Verín, and El Barco de Valdeorras Galician Health Service Ourense Spain
5. College of Public Health University of South Florida Tampa Florida USA
6. Department of Clinical and Experimental Medicine University of Foggia Foggia Italy