Решкова В, Рашков Р. Anxiety and depression in patients with primary and secondary fibromyalgia in Bulgaria. RBJ [Internet]. 15Oct.2022 [cited 10Jun.2023];30(3):21-2. Available from: http://www.rheumatologybg.org/journal/index.php?journal=revmatologiia&page=article&op=view&path[]=160