title: Diabetic retinopathy and smoking.
mesh_terms: D002248:Carbon Monoxide / Q000009:adverse effects; D003930:Diabetic Retinopathy / Q000139:chemically induced / Q000209:etiology*; D006801:Humans; D009538:Nicotine / Q000009:adverse effects; D012907:Smoking / Q000150:complications*
chemical_list: D009538:Nicotine; D002248:Carbon Monoxide