1 Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Sciences, Institutionen för biomedicinska och kliniska vetenskaper (BKV), BKH/Obstetrics and Gynaecology, Linköping University, Linköping, Sweden.
2 Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, International Excellence Campus for Higher Education and Research "Campus Mare Nostrum", University of Murcia, Murcia, Spain.
3 Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy.