Pohan, Tiasa, Wardani Nasution, and Johan Saputra. 2025. “The Effect of Implementing Marketing Mix Strategy on Increasing the Number of Outpatients at Gunung Tua Regional Hospital North Padang Lawas”. Jurnal Kesmas Prima Indonesia 9 (1):85-96. https://doi.org/10.34012/jkpi.v9i1.6168.