Rationale and design for the study Apixaban versus ClopidoGRel on a background of aspirin in patient undergoing InfraPoPliteal angioplasty for critical limb ischemia: AGRIPPA trial - Biagioni, Rodrigo Bruno; Lopes, Renato Delascio; Agati, Leandro Barile; Sacilotto, Roberto; Wolosker, Nelson; Sobreira, Marcone Lima; Soares, Bruno Leonardo de Freitas; Joviliano, Edwaldo Edner; Bernardi, Walkiria Hueb; Castelli Junior, Valter; Caffaro, Roberto Augusto; Fioranelli, Alexandre; et al. (American Heart Journal, 2020)