title: Clinical and biochemical investigations of a variable-dose combined type oral contraceptive.
mesh_terms: D001798:Blood Proteins / Q000032:analysis; D003277:Contraceptives, Oral, Combined / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D004997:Ethinyl Estradiol / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D005260:Female; D006728:Hormones / Q000097:blood; D006801:Humans; D016912:Levonorgestrel / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D008055:Lipids / Q000097:blood
chemical_list: D001798:Blood Proteins; D003277:Contraceptives, Oral, Combined; D006728:Hormones; D008055:Lipids; D004997:Ethinyl Estradiol; D016912:Levonorgestrel