Comparing financing models for supplementary healthcare in appendectomy: activity-based costing (fee-for-service) vs. diagnosis related group remuneration (bundled payment) - a systematic review and meta-analysis - Lino, André de Arimatéia de Souza; Cruz, José Arnaldo Shiomi da; Porto, Breno Cordeiro; Nogueira, Rhuan Pimentel; Otoch, José Pinhata; Artifon, Everson Luiz de Almeida (Acta Cirúrgica Brasileira, 2023)