author = { Enk, Lennart AND Wikland, Matts AND Hammarberg, Karin AND Lindblom, Bo },

title = { The value of endovaginal sonography and urinary human chorionic gonadotropin tests for differentiation between intrauterine and ectopic pregnancy },

publisher = {Wiley},

isbn = {0091-2751},

isbn = {1097-0096},

keywords = { Radiology, Nuclear Medicine and imaging },

year = {1990},