Wanvipa Umpan. 2004. Relation between oral contraceptive use and breast cancer in women. Field of Study Epidemiology, Mahidol University; DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/MU.the.2004.7
Wanvipa Umpan. (2004) Relation between oral contraceptive use and breast cancer in women . Mahidol University/Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/MU.the.2004.7
Wanvipa Umpan. Relation between oral contraceptive use and breast cancer in women. . Bangkok:Mahidol University, 2004. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/MU.the.2004.7
Wanvipa Umpan. (2004) Relation between oral contraceptive use and breast cancer in women . Mahidol University/Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/MU.the.2004.7