Figure 3From: A crossover randomized comparative study of zofenopril and ramipril on cough reflex and airway inflammation in healthy volunteersBox and whiskers plots illustrating changes in fractional exhaled nitric oxide (FeNO) recorded in control conditions (pre-treatment) and after a 7-day treatment period with zofenopril or ramipril in 40 normal volunteers. Data presented as median, 25th/75th percentiles and maximum/minimum recorded values. PPB, parts per billion.Back to article page