1. Department of Preventive and Social Medicine, Ngāi Tahu Māori Health Research Unit, Division of Health Sciences, University of Otago , Dunedin, New Zealand
2. Department of Obstetrics and Gynaecology, Komfo Anokye Teaching Hospital , P.O. Box GP1563, Kumasi, Ghana
3. Department of Preventive and Social Medicine, University of Otago , P.O. Box 56, Dunedin 9054, New Zealand
4. Center for Health Literacy and Rural Health Promotion , P.O. Box 1934, Accra, Ghana
5. Ngāi Tahu Māori Health Research Unit, Division of Health Sciences, University of Otago , P.O. Box 56, Dunedin 9054, New Zealand