RT Journal Article SR Electronic T1 Skin cancer and surgical margins for basal cell carcinoma JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 622 OP 623 DO 10.7861/clinmedicine.6-6-622a VO 6 IS 6 A1 Sandeep Varma YR 2006 UL http://www.rcpjournals.org/content/6/6/622.2.abstract AB