DRBAC-Healthchain (DRBAC-HC): Decentralized Role Based Access Control Framework For Achieving Security And Privacy Using Blockchain In Healthcare System. Journal of Pharmaceutical Negative Results, [S. l.], p. 2896–2907, 2023. DOI: 10.47750/pnr.2023.14.03.364. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/9224.. Acesso em: 13 jun. 2026.