RT Journal Article SR Electronic T1 Nortriptyline safer than amitriptyline? JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 634 OP 636 VO 64 IS 9 A1 O’Sullivan, Cait A1 Froyman, Cristi YR 2018 UL http://www.cfp.ca/content/64/9/634.3.abstract AB