Manurung, Y., Prayogi, R., & Tangkudung, A. G. (2026). Digital Patient Engagement through WhatsApp and Patient Loyalty: A Qualitative Case Study in Private Medical Practices in West Bandung, Indonesia. International Journal of Management Science and Information Technology, 6(1), 745-755. https://doi.org/10.35870/ijmsit.v6i1.6793