High prevalence and co-existence of SHV and CTX-M genes in extensively drug-resistant (XDR) Gram-negative bacteria isolated from hospital settings in Faisalabad District, Pakistan - Umair Abbas; Huma Sajjad; Amir Shaukat; Zaheer Ahmad; Azfar Sattar; Khurram Shehzad; Mark A. T. Blaskovich; Tania Da Silva Duarte; Johannes Zuegg; Aamir Ali; Yasra Sarwar (Molecular Biology Reports, 2026)