Corresponding Author

Xiaoting Qin PhD, MS

Survey Statistician

Asthma and Community Health Branch, Division of Environmental Health Science and Practice, Centers for Disease Control and Prevention, 4770 Buford Hwy NE, Atlanta, GA, 30341

Address correspondence to: Xiaoting Qin, Survey Statistician, (csk5@cdc.gov), Asthma and Community Health Branch, Division of Environmental Health Science and Practice, Centers for Disease Control and Prevention, 4770 Buford Hwy NE, Atlanta, GA 30341Search for more papers by this author