1. Flushing heparin locks: Is saline flushing really cost-effective?;Cole;Journal of Intravenous Nursing,1989
2. Efficacy of 0.9% sodium chloride injection with and without heparin for maintaining indwelling intermittent injection sites;Epperson;Clinical Pharmacy,1984
3. Comparison of heparin and 0.9% sodium chloride injection in the maintenance of indwelling intermittent I.V. devices;Garrelts;Clinical Pharmacy,1989
4. Heparin-lock maintenance with ten units of sodium heparin in one milliliter of normal saline solution;Hanson;Surgery, Gynecology and Obstetrics,1976
5. Intermittent I.V. therapy without heparin: A study;Harrigan;National Intravenous Therapy Association,1985