TY - JOUR T1 - Correction JF - Cleveland Clinic Journal of Medicine JO - Cleve Clin J Med SP - 239 LP - 239 VL - 61 IS - 3 A2 - , Y1 - 1994/05/01 UR - http://www.ccjm.org/content/61/3/239.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -