[1] Univ Nottingham, Sch Hlth Sci, Fac Med & Hlth Sci, Child Hlth Clin Nursing Res, Nottingham, England
[2] Nottingham Univ Hosp NHS Trust, Nottingham Childrens Hosp, Nottingham, England
[3] Nottingham Univ Hosp NHS Trust, Neonatal Serv, Family Hlth Div, Nottingham, England
[4] Anglia Ruskin Univ, Sch Nursing & Midwifery, Fac Hlth Social Care & Educ, Publ Hlth, Cambridge, England
[5] Univ Plymouth, Sch Nursing & Midwifery, Fac Hlth & Human Sci, Clin Nursing, Plymouth, Devon, England
[6] Curtin Univ, Sch Nursing Midwifery & Paramed, Fac Hlth Sci, Perth, WA, Australia