Pan, L., Freedman, D. S., Gillespie, C., Park, S., & Sherry, B. (2011). Incidences of obesity and extreme obesity among US adults: Findings from the 2009 Behavioral Risk Factor Surveillance System. BioMed Central.

Pan, Liping, David S. Freedman, Cathleen Gillespie, Sohyun Park, and Bettylou Sherry. Incidences of Obesity and Extreme Obesity Among US Adults: Findings From the 2009 Behavioral Risk Factor Surveillance System. BioMed Central, 2011.

Pan, Liping, et al. Incidences of Obesity and Extreme Obesity Among US Adults: Findings From the 2009 Behavioral Risk Factor Surveillance System. BioMed Central, 2011.