Prescribing incentive schemes in two NHS regions: cross sectional survey.

accident and emergency departments in east London: the contribution of practice organization, population characteristics, and distance. J Health Serv Res Policy 1997;2:6-13. 3 Morgan K, Prothero D, Frankel S. The rise in emergency admissions: crisis or artefact? Temporal analysis of health services data. BMJ 1999;319:158-9. 4 Meggs MJ, Czaplijski T, Benson T. Trends in emergency department utilization: 1988-1997. Acad Emerg Med 1999;6:1030-5 5 Tryba M, Brüggemann H, Echtenmeyer U. Klassifizierung von Erkrankungen und Verletzungen in Notarztrettungssystemen: National Advisory Committee for Aeronautics (NACA). Anasthesiol Intensivmed Notfallmed Schmerzther 1980;6:725-7. (Accepted 22 October 2001)