TY - JOUR T1 - The midstream muddle JF - Saudi Medical Journal JO - Saudi Med J SP - 306 LP - 306 VL - 21 IS - 3 AU - Robert M. Bannatyne Y1 - 2000/03/01 UR - http://smj.org.sa/content/21/3/306.1.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -