RT Journal Article SR Electronic T1 Cryotherapy JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 53 OP 53 VO 55 IS 1 A1 David Ponka A1 Charles Czarnowski A1 Steve Ballou A1 Margaret Mioduszewski YR 2009 UL http://www.cfp.ca/content/55/1/53.2.abstract AB