Grommets and glue ear: a five-year follow up of a controlled trial.
D000158:Acoustic Impedance Tests; D001299:Audiometry; D002648:Child; D002675:Child, Preschool; D005500:Follow-Up Studies; D006801:Humans; D010033:Otitis Media / Q000601:surgery*; D011183:Postoperative Complications; D013997:Time Factors