Mohd Zawahid, B. S., S. S. Buhari, S. K. Ahmad Sharoni, and Z. Setiyaningrum. “Development and Validation of Food Frequency Questionnaire (FFQ) for Ultra-Processed Food Consumption Among Adults in Malaysia: A Protocol Study”. Environment-Behaviour Proceedings Journal, vol. 8, no. 24, May 2023, pp. 199-05, doi:10.21834/ebpj.v8i24.4629.