title: [Observations on the effect of Sr 90  irradiation for pterygium].
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care; D011625:Pterygium / Q000532:radiotherapy* / Q000601:surgery; D011878:Radiotherapy / Q000009:adverse effects; D012008:Recurrence; D013325:Strontium Isotopes / Q000627:therapeutic use*
chemical_list: D013325:Strontium Isotopes