“Effect of Zingiber officinale Rhizome Powder on Fasting Blood Sugar Levels and HbA1c in Type 2 Diabetes Mellitus Patients: A Meta-Analysis”, INDONES J MED, vol. 7, no. 1, pp. 39–50, Jan. 2022, doi: 10.26911/theijmed.2022.7.1.507.