TY - JOUR T1 - Clinical & Scientific letters JF - Clinical Medicine JO - Clin Med SP - 94 LP - 94 DO - 10.7861/clinmedicine.9-1-94 VL - 9 IS - 1 AU - Alex Paton Y1 - 2009/02/01 UR - http://www.rcpjournals.org/content/9/1/94.abstract ER -