Blockchain-Based Framework for Interoperable Electronic Health Records for an Improved Healthcare System[J] SUSTAINABILITY 2023(15) Reegu, Faheem Ahmad Abas, Hafiza Gulzar, Yonis Xin, Qin Alwan, Ali A. Jabbari, Abdoh Sonkamble, Rahul Ganpatrao Dziyauddin, Rudzidatul Akmam