1. Department of Nurse‐Midwifery Oregon Health & Science University School of Nursing Portland Oregon USA
2. Department of Obstetrics and Gynecology Oregon Health & Science University Portland Oregon USA
3. Vanderbilt University School of Nursing Nashville Tennessee USA
4. Emory University Atlanta Georgia USA
5. Boston College School of Nursing Boston Massachusetts USA
6. School of Public Health Oregon Health & Science University and Portland State University Portland Oregon USA