TY - JOUR T1 - Dear Colleague JF - Cleveland Clinic Journal of Medicine JO - Cleve Clin J Med SP - 231 LP - 231 VL - 64 IS - 5 AU - John D. Clough Y1 - 1997/05/01 UR - http://www.ccjm.org/content/64/5/231.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -