No abstract available
MeSH terms
-
Adult
-
Female
-
Gestational Age
-
Gynecology / standards
-
Humans
-
Inservice Training / standards
-
National Health Programs / standards
-
Obstetrics / standards
-
Poland
-
Practice Guidelines as Topic*
-
Pregnancy
-
Pregnancy Complications / prevention & control*
-
Pregnancy Trimester, First
-
Prenatal Care / standards*
-
Quality Assurance, Health Care / standards
-
Societies, Medical / standards
-
Ultrasonography, Prenatal / standards*
-
Young Adult