RT Journal Article SR Electronic T1 Comparison of proseal laryngeal mask and endotracheal tube for airway safety in pediatric strabismus surgery JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 914 OP 914 VO 33 IS 8 A1 Yong H. Kim YR 2012 UL http://smj.org.sa/content/33/8/914.abstract AB