Serum level changes of BTMs during the chemotherapy process.

Values were presented as mean± SD. *Statistically significant at P < 0.05. 25(OH)D, 25-hydroxvitamin D; PTH, parathyroid hormone; E2, estradiol; FSH, follicle-stimulating hormone. C0, the day of initial diagnosis before chemotherapy; C1, 24 hours after the first cycle of chemotherapy; C2, 24 hours after the second cycle of chemotherapy; C3, 24 hours after the third cycle of chemotherapy; C4, 24 hours after the fourth cycle of chemotherapy. Pa: comparison between the healthy control and the baseline of patients; Pb: comparison between the baseline (C0) and after the 4th cycle of chemotherapy (C4). Serum level changes of BTMs during the chemotherapy process.