<https://vestibular.org/article/diagnosis-treatment/types-of-vestibular-disorders/perilymph-fistula/#webpage>
<http://schema.org/description>
"A perilymph fistula (PLF) is a defect in the small, thin membranes that separate the air filled middle ear and the fluid filled inner ear."
<https://vestibular.org/article/diagnosis-treatment/types-of-vestibular-disorders/perilymph-fistula/>