http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nêu một số bệnh về tai, mũi họng và cách phòng ngừa như bệnh viêm xoang cấp, mạn tính, hạch cổ, điếc và giảm thính lực, bệnh viêm mũi dị ứng...