1. University of Auckland; School of Nursing; Private Bag 92019 Auckland New Zealand
2. University of Manchester; School of Nursing, Midwifery and Social Work; Jean McFarlane Building Oxford Road Manchester UK M13 9PL
3. Kleijnen Systematic Reviews; Unit 6, Escrick Business Park Riccall Road, Escrick York UK YO19 6FD
4. University of Auckland; National Institute for Health Innovation; Private Bag 92019 Auckland New Zealand