RT Journal Article SR Electronic T1 Cushing's syndrome in pregnancy JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1059 OP 1061 VO 141 IS 10 A1 D. J. Cook A1 R. H. Riddell A1 J. D. Booth YR 1989 UL http://www.cmaj.ca/content/141/10/1059.abstract