Yun Xing

Comorbidity of substance use disorders and other psychiatric disorders among adolescents: evidence from an epidemiologic survey.

R. Roberts, C. R. Roberts, Catherine Ramsay Roberts, 2007, Drug and alcohol dependence.

Restricted Sleep Among Adolescents: Prevalence, Incidence, Persistence, and Associated Factors

R. Roberts, C. R. Roberts, Catherine Ramsay Roberts, 2011, Behavioral sleep medicine.