Effectiveness of Village Health Volunteer Parallel Program for Proactive Action to Reduce Risk Factors for Cholangiocarcinoma in Two High-Risk Countries in the Greater Mekong Subregion.

Thailand and Laos were classified as risk areas for cholangiocarcinoma (CCA) in a 2017 assessment in the Greater Mekong Subregion. In 2019, the potential of village health volunteers (VHVs) in both risk areas was developed. The VHVs trained in 2014 (VHV-A) were mentors transferring knowledge of CCA prevention to the trainees (known as VHV-B) in a parallel manner.