RT Journal Article SR Electronic T1 Anal fissures; first do no harm JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 16 OP 16 DO 10.3399/bjgp14X676366 VO 64 IS 618 A1 Guy Nash YR 2014 UL http://bjgp.org/content/64/618/16.2.abstract AB