Increased Serum Levels of Asymmetric Dimethylarginine and Symmetric Dimethylarginine and Decreased Levels of Arginine in Sudanese Patients with Essential HypertensionKidney Blood Press Res, Publications Gamil S, Erdmann J, Schwedhelm E, Bakheit KH, Abdalrahman IBB, Mohamed AO. Kidney Blood Press Res. 2020 Aug 19:1-10. doi: 10.1159/000508695. https://pubmed.ncbi.nlm.nih.gov/32814314/