“Value Of Superficial Ultrasonography In Determination Of Intramuscular Injection Technique And Needle Size On Infant Vaccination ”, Ann Med Res , vol. 9, no. 3, pp. 0191–0194, May 2021, Accessed: Oct. 14, 2025. [Online]. Available: http://annalsmedres.org/index.php/aomr/article/view/2919