doi.org/10.1136/bmj.318.7187.876, hdl.handle.net/1765/95254
BMJ

Reid, F. (Fiona), Sturdy, P. (Patricia), Rogers, A., Karlsen, S., Bruijnzeels, M., Leung, W.-C. (Wai-Ching), Bragonier, R. (Reg), Arber, S., Cooper, H.& Smaje, C. (1999). Use of health services by children. BMJ, 318(7187).https://doi.org/10.1136/bmj.318.7187.876