A synonymous KCNH2 polymorphism and methadone trough level influence QTc prolongation in Kelantanese Malay recipients of methadone maintenance therapy (MMT) in Malaysia - Muhammad Irfan Abdul Jalal; Muhammad-Redha Abdullah-Zawawi; Nurfadhlina Musa; Basyirah Ghazali; Zalina Zahari; Nasir Mohamad (PLoS ONE, 2025)