Marczak , M. “The Application of Ranibizumab in Therapy of Diabetic Macular Edema – Own Observations”. OphthaTherapy. Therapies in Ophthalmology, Vol. 1, no. 3, Sept. 2014, pp. 165-9, https://journalsmededu.pl/index.php/ophthatherapy/article/view/685.