TY - JOUR T1 - ‘Obvious’ answers aren’t always so simple JF - Cleveland Clinic Journal of Medicine JO - Cleve Clin J Med SP - 487 LP - 487 VL - 70 IS - 6 AU - John D. Clough Y1 - 2003/06/01 UR - http://www.ccjm.org/content/70/6/487.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -