Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/2841
Is Reference of American College of Obstetricians and Gynecologists-en#Sense
Collège américain des obstétriciens et gynécologues-fr#Sense
Colegio Estadounidense de Obstetras y Ginecólogos-es#Sense
ACOG-en#Sense