A 15-Year-Old Female Who Participates in High School Track and Gymnastics

A 15-year-old female who participates in high school track and gymnastics is experiencing amenorrhea after having eight normal periods. A pregnancy test is negative. What may be included in management of this patient's amenorrhea to restore normal periods? (Select all that apply.)

A) Calcium and vitamin D supplementation
B) Clomiphene administration
C) Combination oral contraceptives
D) Dietician consultation
E) Estriol therapy