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UMRAO S, ELANGOVAN S, THARAMMAL M, QURESHI M, MOHAMMED S, ALAM M, ASHRAF F, AMIN F, KHAN M. REPEATED PRESSURE-RELATED CHROMATOGRAPHIC FAILURE DURING SALIVARY CORTISOL ANALYSIS BY LC-HRMS/MS: A LABORATORY CASE REPORT AND HYPOTHESIS-DRIVEN ROOT CAUSE ASSESSMENT. Bull. Biol. All. Sci. Res. [Internet]. 2026 Nov. 12 [cited 2026 Nov. 13];2026(1):141. Available from: https://bbasr.org/index.php/home/article/view/141