Concomitant Use of Ranolazine and Trimetazidine in Patients with Refractory Angina: An Initial Experience - Dourado, Luciana Oliveira Cascaes; Moreno, Cristian Paul Delgado; Grobe, Sarah Fagundes; Gowdak, Luis Henrique Wolff; Cesar, Luiz Antonio Machado (Arquivos brasileiros de cardiologia, 2022)