title: [EARLY DIAGNOSIS OF PREGNANCY. COMPARATIVE STUDY OF 3 DIAGNOSTIC TESTS. PRELIMINARY REPORT].
mesh_terms: D000486:Allergy and Immunology; D001699:Biometry; D003955:Diagnostic Tests, Routine; D042241:Early Diagnosis; D005260:Female; D006801:Humans; D011247:Pregnancy; D011258:Pregnancy Tests; D013223:Statistics as Topic
keywords: IMMUNOLOGY; PREGNANCY; PREGNANCY TESTS; STATISTICS
vernacular_title: DIAGN'OSTICO PRECOZ DEL EMBARAZO. ESTUDIO COMPARATIVO DE TRES PRUEBAS PARA EL DIAGN'OSTICO. INFORME PRELIMINAR.