Thaworncheep, P.; Jianramas, N.; Issapak, S.; Rajphithak, S.; Waedoko, S.; Bin-arwa, S.; Prasomsri, J. Development, validity, and reliability of harm perception and attitudes questionnaire for smokers of roll-your-own and factory-made cigarettes: A pilot study in Southern Thailand. J Assoc Med Sci 2025, 58, 195-203.