Pub Date : 2026-08-31DOI: 10.3897/folmed.68.e166816Norin Khan, Albena I Spasova, Yordan I Trifonov, Svetlana A Velizarova, Petar I Trifonov, Edmond V Rangelov, Nikola K Kartulev, Zdravka Antonova, Velichka D Oparanova, Nadezhda Tolekova, Hristo Shivachev, Natalia Gabrovska