Rahayu, Pujen Tri, et al. “Technique to Open an Ampoule With an ‘Ampoule Opener’ Tool”. MEDISAINS: Jurnal Ilmiah Ilmu-Ilmu Kesehatan, vol. 18, no. 3, Dec. 2020, pp. 110-2, doi:10.30595/medisains.v18i3.8371.