Correlation of the Presence of Non Structural-1 (NS1) Antigen Dengue Virus with Severity of Dengue Infection, Baihaki, Ichwan, Dewi Beti Ernawati, Kharisma Viol Dhea, Murtadlo Ahmad Affan Ali, Tamam Muhammad Badrut, Purnamasari Devi, Soekamto Nunuk Hariani, Ansori ANM,, Mandeli Riso Sari, et al. , Pharmacognosy Journal, December 2022, Volume 14, Issue 6, p.813-816, (2022)