1. Discipline of Clinical Pharmacy, School of Pharmaceutical Sciences, Universiti Sains Malaysia; 11800 Pulau Pinang Malaysia
2. Hospital Pulau Pinang, Jalan Residensi; George Town Pulau Pinang Malaysia
3. Jabatan Perubatan Respiratori, Hospital Sultanah Bahiyah, Lebuh Raya Darul Aman; Alor Setar 05350 Kedah Malaysia
4. Hospital Umum Sarawak, Jalan Tun Ahmad Zaidi Adruce; Kuching 93586 Sarawak Malaysia
5. Faculty of Medicine, Universiti Teknologi MARA (UiTM); Shah Alam Selangor Malaysia