1 Department of Oral Medicine and Periodontology, Study Programme of Dental Medicine, School of Medicine, University of Split, Šoltanska 2, 21000 Split, Croatia.
2 Department of Research in Biomedicine and Health, School of Medicine, University of Split, Šoltanska 2, 21000 Split, Croatia.
3 Women's Centre, John Radcliffe Hospital, Oxford OX3 9DU, UK.