RT Journal Article SR Electronic T1 Random 2 dimensional ultrasonic evaluation of uterine cervix in pregnancy JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 269 OP 271 VO 27 IS 2 A1 Tobechukwu T. Marchie A1 Oisaremen E. Otoibhi A1 Ehimwenma Ogbeide A1 Pamela Faith I. Irabor A1 Stanley Z. Ogoinja YR 2006 UL http://smj.org.sa/content/27/2/269.abstract AB