Ayres-de-Campos Diogo, Arulkumaran Sabaratnam
Medical School, Institute of Biomedical Engineering, S. Joao Hospital, University of Porto, Portugal.
St George's, University of London, London, UK.
Int J Gynaecol Obstet. 2015 Oct;131(1):5-8. doi: 10.1016/j.ijgo.2015.06.018.