Brčić Karačonji, I.; Jelača, T.; Jurič, A.; Lucić Vrdoljak, A. Morphine and Codeine in Racing Horse Feed: Is There reason for Concern? Arh Hig Rada Toksikol 2025, 76 (1). https://doi.org/10.2478/aiht-2025-76-3888.