Understanding consumer response to front-of-package labeling: insights from a nationwide survey in Sri Lanka. - Wijesinghe MSD; Nissanka NAKAI; Karawita UG; Gunawardana BMI; Weerasinghe WMPC; Vithana VCN; Mahagamage KLK; Alagiyawanna AMAAP; Batuwanthudawe R (BMC public health, 2025)