N. Luong, S. E. Thuma, A. Santore, Z.- qiang Ma, S. M. Watkins, and E. McCarty, “Prevalence and Associated Risk Factors of Postpartum Depression among Mothers in Pennsylvania, United States: An Analysis of the Pregnancy Risk Assessment Monitoring System (PRAMS) Data, 2012-2015”, Int J Transl Med Res Public Health, vol. 5, no. 2, pp. 215–226, Jun. 2021.