Araújo, Raul Amaral de, et al. “Self-Care Agency and Quality of Life in the Preoperative Period of Coronary Artery Bypass Graft Surgery”. Revista Da Escola De Enfermagem Da USP, vol. 50, no. 2, Apr. 2016, pp. 232-8, https://doi.org/10.1590/S0080-623420160000200008.