1 Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medical College and New York-Presbyterian Hospital, New York, New York, USA.
2 Division of Pulmonary and Critical Care Medicine, Weill Cornell Medical College, New York, New York, USA.
3 Department of Laboratory Medicine, National Taiwan University Hospital and National Taiwan University Cancer Center, Taipei, Taiwan, China.
4 Research Center for Natural Human Defense System, Yonsei University College of Medicine, Seoul, Republic of Korea.
5 Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, South Korea.
6 The Airway Mucus Institute, Yonsei University College of Medicine, Seoul, South Korea.
7 Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medical College and New York-Presbyterian Hospital, New York, New York, USA. amc2056@med.cornell.edu.
8 Division of Pulmonary and Critical Care Medicine, Weill Cornell Medical College, New York, New York, USA. amc2056@med.cornell.edu.