1 Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio; Division of Asthma Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
2 Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio; Division of Epidemiology and Biostatistics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
3 Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio; Division of Asthma Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio. Electronic address: gurjit.hershey@cchmc.org.