Pratama, Susilo Budi, dkk. “The Effect of Ginger (Zingiber Officinale) Extract on the Neutrophil Level and CAT (COPD Assessment Test) Scores in Workers With COPD Due to Dust Exposure”. Qanun Medika - Jurnal Kedokteran FK UMSurabaya, vol. 6, no. 1, Januari 2022, doi:10.30651/jqm.v6i1.9711.