Br J Obstet Gynaecol. 1987 Sep;94(9):915-6. doi: 10.1111/j.1471-0528.1987.tb03766.x.
British journal of obstetrics and gynaecology
R M Aspden
PMID: 3663554 DOI: 10.1111/j.1471-0528.1987.tb03766.x
[No abstract available.]