Otto-Buczkowska, E. (2010) “Metformin added to insulin therapy for type 1 diabetes mellitus – based on literature and own expe- rience”, European Journal of Clinical and Experimental Medicine, 8(3), pp. 338–342. Available at: https://journals.ur.edu.pl/ejcem/article/view/13042 (Accessed: 20 May 2026).