1. Contraction stress test for antepartum fetal evaluation;Schifrin;Obstet. Gynecol,1978
2. Fetal demise following negative contraction stress tests;Evertson;Obstet. Gynecol,1978
3. Fetal activity acceleration determination for the evaluation of fetal reserve;Lee;Obstet. Gynecol,1976
4. The nonstress test: A review of 3,000 tests;Phelan;Am. J. Obstet. Gynecol,1981
5. Anterpartum fetal heart rate testing: The nonstress test;Evertson;Am. J. Obstet. Gynecol,1978