Oral Contraceptives & Cancer Risk: Questions & Answers (2018). National Cancer Institute Member Services.
Chicago-čujuhus (17. p.)Oral Contraceptives & Cancer Risk: Questions & Answers (2018). National Cancer Institute Member Services.
MLA-čujuhus (9. p.)Oral Contraceptives & Cancer Risk: Questions & Answers (2018). National Cancer Institute Member Services.
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