Kalchev, Yordan, Tsetsa Petkova, Ralitsa Raycheva, Bothwell Kabayira, Tanya Deneva, and Marianna Murdjeva. “Serum Procalcitonin Levels in Patients With Acute Central Nervous System Infections”. Open Access Macedonian Journal of Medical Sciences 8, no. B (December 10, 2020): 1251–1255. Accessed May 4, 2024. https://oamjms.eu/index.php/mjms/article/view/5497.