1. Simkin Center for Allied Birth Vocations; Bastyr University; 1100 23rd Ave. E; Seattle; Washington; 98112; USA
2. King's College London; Waterloo Campus; London; SE1 8WA; United Kingdom
3. 47 Point Rd.; Portsmouth; Rhode Island; 02871; USA
4. Department of Obstetrics and Gynecology; University of Rochester School of Medicine; 601 Elmwood Ave., Box 668,; Rochester; New York; 14642; USA
5. 2706 S.W. English Court,; Portland; Oregon; 97201,; USA
6. Center for Bioethics; University of North Carolina; 333 South Columbia Street, CB#7240, 333 MacNider Hall; Chapel Hill; North Carolina; 27599-7240; USA
7. Department of Obstetrics and Gynaecology; Affiliate Investigator Ottawa Hospital Research Institute; University of Ottawa; PO Box 21091, RPO Princess; Kingston; Ontario; K7L 5P5; Canada
8. Department of Obstetrics, Gynaecology and Reproductive Medicine; Flinders University; Flinders Medical Centre; Bedford Park; Adelaide; South Australia; 5042; Australia