title: Twin pregnancy in a tertiary referral unit--analysis of trends in the 1990s.
authors.affiliation: National Maternity Hospital, Holles Street, Dublin 2, Republic of Ireland.
authors.forename: M P
authors.initials: MP
authors.lastname: O'Connell
authors.forename: P
authors.initials: P
authors.lastname: Deo
authors.forename: S W
authors.initials: SW
authors.lastname: Lindow
mesh_terms: D036861:Delivery, Obstetric / Q000379:methods; D005260:Female; D005865:Gestational Age; D006801:Humans; D008423:Maternal Age; D010298:Parity; D011247:Pregnancy; D015995:Prevalence; D027724:Reproductive Techniques, Assisted / Q000706:statistics & numerical data* / Q000639:trends; D014427:Twins / Q000706:statistics & numerical data*; D006113:United Kingdom / Q000453:epidemiology