Our newly conducted work in pilot phase of Household Air Pollution Intervention Network (HAPIN) trial was published on Journal of Exposure Science and Environmental Epidemiology (JESEE). We found indirect exposure assessment of household air pollution using Beacon systems is a feasible approach to estimate personal exposure, especially for children when personal air pollution monitor is not feasible. Check out our work here: https://www.nature.com/articles/s41370-019-0172-z. Online visualization of the data can be found here: https://hapin-trial.shinyapps.io/mother_microenvironmental_data