RT Journal Article SR Electronic T1 Critical elevation of international normalized ratio in an elderly woman using a natural health product JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 536 OP 537 VO 63 IS 7 A1 Kevin Pottie A1 Kamila Premji A1 Sitelle LĂ©onie Cheskey YR 2017 UL http://www.cfp.ca/content/63/7/536.abstract AB