Santos EJF dos, Nunes MMJC, Cardoso DFB, Apóstolo JLA, Queirós PJP, Rodrigues MA. Effectiveness of heparin versus 0.9% saline solution in maintaining the permeability of central venous catheters: a systematic review . Rev. Esc. Enferm. USP [Internet]. 2015 Dec. 1 [cited 2024 Apr. 27];49(6):995-1003. Available from: https://revistas.usp.br/reeusp/article/view/108427