title: Estimation of the age composition of current IUD users: example of Taiwan, Republic of China.
mesh_terms: D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000706:statistics & numerical data*; D008433:Mathematics; D008875:Middle Aged; D008962:Models, Theoretical; D011155:Population Control; D013624:Taiwan; D013997:Time Factors