A new model for retinal lesion detection of diabetic retinopathy using hierarchical self-organizing maps. - Hossein Ghayoumi Zadeh; Hamidreza Jamshidi; Ali Fayazi; Mohammad Hossein Gholizadeh; Cyrus Ahmadi Toussi; Mostafa Danaeian (Iran J. Comput. Sci., 2020)