A Systematic Review on Effectiveness of Nicotine-Based and Non-Nicotine Based Drug Delivery System for Smoking Cessation Among the Elderly. - Husin, Amri Nurhakim Mat; Azmi, Nurul Atifah; Sabari, Nurul Hanis Mohd; Mohamed, Mohamad Haniki Nik; Hamdi, Nurul Ain Mohammad; Haris, Muhammad Salahuddin (Malaysian Journal of Medicine & Health Sciences, 2023)