Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Maruyama Yumiko and Ito Makoto and Furukawa Mitsuru,Insertion of Ventilation Tube for Treatment of Recurrent Acute Otitis Media.,Practica Oto-Rhino-Laryngologica,00326313,The Society of Practical Otolaryngology,2002,95,4,327-336,https://cir.nii.ac.jp/crid/1390282679238182400,https://doi.org/10.5631/jibirin.95.327