Missed Care Study Group, Dall'Ora, C, Griffiths, P, Redfern, O, Recio-Saucedo, A, Meredith, P & Ball, J 2019, ' Nurses’ 12-hour shifts and missed or delayed vital signs observations on hospital wards: retrospective observational study ', BMJ Open, vol. 9, e024778 . https://doi.org/10.1136/bmjopen-2018-024778 BMJ Open