Chairuddin B, Sujianto S, Tua H, Adianto A. Designing medical tourism policies in Siak regency at Riau Province. ijirss [Internet]. 2025 Jun. 27 [cited 2025 Sep. 23];8(4):1610-8. Available from: http://www.ijirss.com/index.php/ijirss/article/view/8141