An eco-friendly HPLC method for simultaneous analysis of sildenafil and sodium benzoate in pulmonary arterial hypertension suspension dosage monitoring. - Ma, Jin-Kui; Lin, Yu-Tong; Chen, Xiao-Yang; Liang, Nai-Long; Darwish, Ahmed Sobhy; Darwish, Wageh Sobhy; Hamza, Asmaa M. H.; Zaki, Mohamed Samir Ahmed; Chen, Ri-Meng; Huang, Xiao-Chen (Scientific Reports, 2026)