Columbia subject headings:
Childbirth at home--United States--Evaluation.
Childbirth--United States.
Maternal health services--United States--Evaluation.
Women's hospitals--United States--Evaluation.
Harvard subject headings:
Childbirth at home--United States--Evaluation.
Childbirth--United States.
Hospitals--Maternity services--United States--Evaluation.
Maternal health services--United States--Evaluation.
Women's hospitals--United States--Evaluation.
Princeton subject headings:
Childbirth at home--United States--Evaluation.
Childbirth--United States.
Hospitals--Maternity services--United States--Evaluation.
Maternal health services--United States--Evaluation.