Source: https://www.cambridge.org/core/services/aop-cambridge-core/content/view/41F814A1151A6F9E5ED2D5D5879F7963/S0022215108003964a.pdf/impact-of-isotonic-and-hypertonic-saline-solutions-on-mucociliary-activity-in-various-nasal-pathologies-clinical-study.pdf