... vyc d djch, tai cae ciia hang/quan an lien quan den benh nhan td. + Mau rau tham/rau sdng cac loai (la mo, rau ngd, rau hiing, ) tai cae cira hang/quan an lien quan den benh nhan ta, tai cac ... hang/quan an lien quan den benh nhan ta, cae chp dau mdi vd ca sd san xuat. + Mdu thit chd sdng, chin, mau tam bdng ngody hau mdn chd sdng, chd da thui tai cdc ciia hang/quan an lien quan ... lifu thu thap thdng qua phieu dieu tra ca benh + Sd lifu se dupe quan Iy bang phan mem Microsoft Access, Microsoft Excel va dupe xii Iy, phan tich bang phan mem Stata. + Ket qua dupe trinh bay...