Wasan Nazhan Hussein, Sayran Sattar Saleh and Wissam Sbhan Khalf 2023. Determination of Homocysteine and Vitamin B12 level in blood Patients Rheumatoid Arthritis in KirKuk Governorate. Tikrit Journal of Pure Science. 21, 5 (Feb. 2023), 104–109. DOI:https://doi.org/10.25130/tjps.v21i5.1036.