Rahayu, Dwi, Hengky Irawan, & Puguh Santoso.
" Deep Breathing Exercise For Decreasing Anxiety Level on People Undergo Covid 19  Vaccination." <em>JURNAL ILKES : Jurnal Ilmu Kesehatan</em> [Online], 13.1 (2022): 75-82. Web.  7 Oct. 2026