Wiyono, H., & Putra, P. P. (2023). The effect of breathing exercises on the anxiety level of preoperative patients in the Dahlia room, dr. Doris Sylvanus Palangka Raya: The effect of breathing exercises on the anxiety level of preoperative patients in the Dahlia room, dr. Doris Sylvanus Palangka Raya. Jurnal Forum Kesehatan : Media Publikasi Kesehatan Ilmiah, 12(2), 51–56. https://doi.org/10.52263/jfk.v12i2.123