“…Theoretically in order to conduct a rigorous study, higher‐risk patients should be randomized to either this NIV or an array of other supporting methods such as ET‐MV, rigid endoscope, or facemask‐NIV. The authors have been successfully using this technique without significant adverse events to aid FB for more than a decade in thousands of pediatric patients of various ages, BWs, with critical and complicated problems . Obviously, it seems to be unethical to conduct such studies again.…”