The primary objective of this study is to show that the Supraglottic Index (SGI) is an easily-collected index that accurately identifies the presence and severity of laryngopharyngeal reflux (LPF) in idiopathic pulmonary fibrosis (IPF).
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The supraglottic index (SGI) quantifies laryngopharyngeal reflux (LPF) and is associated with severity of pulmonary fibrosis.
Timeframe: 6 months