148. Effect of Low-Dose Combined Oral Contraceptives on Bone Mineral Density in Adolescents: A 1-Year Follow-Up by Biason, Talita Poli, MD, Moretto, Maria Regina, MSc, Rezende, Cristina Fortes, PhD, Kurokawa, Cilmery Suemi, PhD, Teixeira, Altamir, MD, PhD, Nunes, Helio, MSc, Santanna, Maria José, MD, PhD, Coates, Veronica, MD, PhD, Goldberg, Tamara Beres Lederer, MD, PhD

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