Authors' response: Letter to the Editor 'Comparison of lung clearance index determined by washout of N2 and SF6 in infants and preschool children with cystic fibrosis'

Keywords

• Child, Preschool
• *Cystic Fibrosis
• Humans
• Infant
• Lung
• Respiratory Function Tests
• *Clinical trial endpoint
• *Early CF lung disease
• *Infant lung function test
• *Lung clearance index
• *Magnetic resonance imaging
• *Multiple breath washout