... experiments and data acquisition MV conducted experiments, interpretation of data, and manuscript drafting GB performed study conception and design, statistical analysis and interpretation of data, and ... none of them demonstrated a clear superiority and became the standard Pharmacologic approaches included nitric oxide inhalation, surfactant replacement therapy, antioxidants, prostaglandins, and ... performed study conception and design, experiments, interpretation of data, and manuscript drafting MM performed study design, experiments, and data acquisition and analysis EF, AL, RP, LR, and PS...