Villacorta and others. 2003. Health services utilization among the Thai elderly : findings from the Kanchanaburi Project Demographic Surveillance Survey. Field of Study Population and Reproductive Health Research, Mahidol University;

Villacorta and others. Health services utilization among the Thai elderly : findings from the Kanchanaburi Project Demographic Surveillance Survey. . Bangkok:Mahidol University, 2003.

Villacorta and others. (2003) Health services utilization among the Thai elderly : findings from the Kanchanaburi Project Demographic Surveillance Survey . Mahidol University/Bangkok.