Jurado MAR, Castañeda HMM. Regulation In Procurement Of Goods And Services For Amounts Up To 8 Uit Tax Units And Efficiency In Purchases Of The Social Health Security - Essalud, 2022. J Neonatal Surg [Internet]. 2025 Apr. 9 [cited 2026 May 30];14(13S):670-8. Available from: https://jneonatalsurg.com/index.php/jns/article/view/3342