PARVOVA, I.; RANGELOV, A.; HRISTOV, E.; RASHKOV, R.; GETOV, I.; OGNIANOV, S. PROSPECTIVE STUDY OF ADVERSE DRUG REACTIONS IN A BULGARIAN POPULATION OF PATIENTS WITH INFLAMMATORY JOINT DISEASES TREATED WITH BIOLOGICAL MEDICINAL PRODUCTS. Rheumatology (Bulgaria), v. 28, n. 1, p. 3-19, 24 mar. 2020.