1. Making heel pricks less painful;Harpin, V.; Rutter, N.;Arch Dis Child,1983
2. Neonatal facial and cry responses to invasive and non-invasive procedures;Grunau, R.V.E.; Johnston, C.C.; Craig, K.D.;Pain,1990
3. Exposure to invasive procedures during neonatal intensive care unit admissions;Barker, D.P.; Rutter, N.;Arch Dis Child
4. The pain of heel prick and its measurement in preterm infants;McIntosh, N.; Van Veen, L.; Brameyer, H.;Pain,1993
5. Pain in the preterm neonate: behavioural and physiological indices;Craig, K.D.; Whitfield, M.F.; Grunau, R.V.E.; Linton, J.; Hadjistavropoulos, H.D.;Pain,1993