“Establishing Gestational Age-Specific Blood Pressure Reference Ranges in Pregnancy and for Hypertensive Disorders Among Tribal Women of Andhra Pradesh, India: Establishing Gestational Age-Specific Blood Pressure References-Protocol”. International Journal of Health Systems and Implementation Research, vol. 4, no. 1, June 2020, pp. 103-11, https://ijhsir.ahsas-pgichd.org/index.php/ijhsir/article/view/66.