. 1991 Jan;44(1):86. doi: 10.1136/jcp.44.1.86-a
Guidelines on oral anticoagulation: second edition.
PMCID: PMC497028 PMID: 1997544
See the article "Guidelines on oral anticoagulation: second edition. British Society for Haematology. British Committee for Standards in Haematology. Haemostasis and Thrombosis Task Force." in volume 43 on page 177.