Affiliation: | (1) Department of Obstetrics & Gynaecology, University of Sydney at Westmead Hospital, 2145 Westmead, NSW, Australia;(2) Department of Mathematics, University College, University of New South Wales, Australian Defence Force Academy, 2600 Campbell, ACT, Australia;(3) Department of Mechanical Engineering, University College, University of New South Wales, Australian Defence Force Academy, 2600 Campbell, ACT, Australia |