RT Journal Article SR Electronic T1 Pregnancy-related cardiac risk in women with congenital heart disease: is it over when it's over? JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 93 OP 94 DO 10.1136/ebm1183 VO 16 IS 3 A1 Paul Khairy A1 Susan M Fernandes A1 Michael J Landzberg YR 2011 UL http://ebm.bmj.com/content/16/3/93.abstract AB