Mohammad Omar Faruq (2023) “Role of Nigella Sativa (Black Cumin Seeds) as an Adjunct Therapy in Treating Severe and Critical COVID -19 Infection Compared to Those with Standard Therapy: An Open Label Randomized Clinical Trial”, Bangladesh Critical Care Journal, 11(2), pp. 75–82. doi: 10.3329/bccj.v11i2.69187.