Laddawan Dokkaew. 2015. Prevalence and factors associated with respiratory symptoms and pulmonary function among solid waste collectors of Bangkok metropolitan adminstration. , Mahidol University; DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/MU.the.2015.56

Laddawan Dokkaew. Prevalence and factors associated with respiratory symptoms and pulmonary function among solid waste collectors of Bangkok metropolitan adminstration. . Nakhon Pathom:Mahidol University, 2015. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/MU.the.2015.56

Laddawan Dokkaew. (2015) Prevalence and factors associated with respiratory symptoms and pulmonary function among solid waste collectors of Bangkok metropolitan adminstration . Mahidol University/Nakhon Pathom. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/MU.the.2015.56