APA

Kohn M. A., Kerr K., Malkevich D., O'Neil N., Kerr M. J. & Kaplan B. C. (20030626). Beta-human chorionic gonadotropin levels and the likelihood of ectopic pregnancy in emergency department patients with abdominal pain or vaginal bleeding. : Academic emergency medicine : official journal of the Society for Academic Emergency Medicine.

Chicago

Kohn Michael A, Kerr Kristi, Malkevich David, O'Neil Nelda, Kerr M James and Kaplan Beth C. 20030626. Beta-human chorionic gonadotropin levels and the likelihood of ectopic pregnancy in emergency department patients with abdominal pain or vaginal bleeding. : Academic emergency medicine : official journal of the Society for Academic Emergency Medicine.

Harvard

Kohn M. A., Kerr K., Malkevich D., O'Neil N., Kerr M. J. and Kaplan B. C. (20030626). Beta-human chorionic gonadotropin levels and the likelihood of ectopic pregnancy in emergency department patients with abdominal pain or vaginal bleeding. : Academic emergency medicine : official journal of the Society for Academic Emergency Medicine.

MLA

Kohn Michael A, Kerr Kristi, Malkevich David, O'Neil Nelda, Kerr M James and Kaplan Beth C. Beta-human chorionic gonadotropin levels and the likelihood of ectopic pregnancy in emergency department patients with abdominal pain or vaginal bleeding. : Academic emergency medicine : official journal of the Society for Academic Emergency Medicine. 20030626.