1. Department of MedicineUniversity of California San Francisco San Francisco California
2. Department of PediatricsUniversity of California San Francisco San Francisco California
3. Department of PediatricsCentro de Neumología Pediátrica San Juan Puerto Rico
4. Department of BiostatisticsUniversity of Washington Seattle Washington
5. Department of Biostatistics, Center for Statistical GeneticsUniversity of Michigan Ann Arbor Michigan
6. Department of PediatricsNeumología Pediátrica del Hospital Infantil Dr. Robert Reid Cabral Santo Domingo República Dominicana
7. Department of PediatricsNational Jewish Health Denver Colorado
8. Department of Bioengineering and Therapeutic SciencesUniversity of California San Francisco San Francisco California