Refrences

1) Laupacis A, Sekar N, Stiell IG.  Clinical Prediction Rules: A Review and Suggested Modifications of Methodological Standards

2) Buckley RG, King KJ, Disney JD.  Derivatiion of a Clinical Prediction Model for the Emergency Department Diagnosis of Ectopic Pregnancy.  Acad Emerg Med 1998 vol 5 pp 951-959.

3) Selker HP et als.  A Time-Insensitive Predictive Instrument for Acute Myocardial Infarction Mortality.  Medical Care  1991;29(12):1196-1210)