1 Sections of Pulmonary and Critical Care Medicine and Neonatology, Department of Pediatrics, University of Colorado School of Medicine and Children's Hospital, Denver, CO 80218-1088
Dr Davidson misinterprets our recent commentary on the pathophysiology of persistent pulmonary hypertension of the newborn (PPHN) and potential therapeutic role of inhaled nitric oxide (I-NO) as suggesting the lack of a need for multiple studies that investigate different questions regarding its efficacy. In contrast, we clearly state that "multicenter studies play vital roles in improving clinical care, and the absence of such studies may lead to the inappropriate use of ineffective or harmful therapies."