Endogenous fecal excretion was measured in a subset of children, and net calcium balance was calculated.
在部分孩子中测定钙的排泄量，计算钙的代谢平衡。
The sense of daily urinary and fecal zinc excretion were rather limited.
每日尿锌和粪锌的排泄量则有一定的局限性。
The sense of daily urinary and fecal zinc excretion were rather limited.
每日尿锌和粪锌的排泄量则有一定的局限性。
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