Affiliation: | a Aberdeen Maternity Hospital, Foresterhill, Aberdeen, United Kingdom b Division of Applied Medicine, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen, United Kingdom c Division of Medical Education and Dentistry, School of Medicine, University of Aberdeen, Foresterhill, Aberdeen, United Kingdom d Division of Applied Health Sciences (Obstetrics and Gynecology), University of Aberdeen, Foresterhill, Aberdeen, United Kingdom |