Oral health behavior of children and guardians' beliefs about children's dental caries in Vientiane, Lao People's Democratic Republic (Lao PDR). oleh Somphone Phanthavong, Daisuke Nonaka, Thongsavanh Phonaphone, Kyoko Kanda, Phouphachanh Sombouaphan, Norie Wake, Sangvane Sayavong, Toshiyuki Nakasone, Khampe Phongsavath, Akira Arasaki