Acknowledgements
The authors acknowledge Jun Zou who supported the biostats analysis for the WILLOW study and the following Insmed colleagues who contributed to the analysis of the NE activity in the WILLOW blood samples: Amruta Sabnis, Arielle Dorfman, Kuan-Ju Chen, Franziska Leifer, Xizhe Zhao, Jeong Yeong Kang, Mary Atalla, Sadikul Islam, and Yang Deng.