TY - JOUR T1 - Spheres of medical influence JF - Clinical Medicine JO - Clin Med SP - 387 LP - 391 DO - 10.7861/clinmedicine.6-4-387 VL - 6 IS - 4 AU - Carol Black Y1 - 2006/07/01 UR - http://www.rcpjournals.org/content/6/4/387.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -