TY - JOUR T1 - Commentary JF - Cleveland Clinic Journal of Medicine JO - Cleve Clin J Med SP - 41 LP - 41 VL - 54 IS - 1 AU - Michael B. Howie Y1 - 1987/01/01 UR - http://www.ccjm.org/content/54/1/41.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -