Methods Judge digestive tract function by examining expiratory hydrogen concentration change during empty stomach and after eating different substrate.
方法采用不同底物试餐测定空腹和试餐后呼气氢浓度动态变化，判断消化道功能状态。
Methods Judge digestive tract function by examining expiratory hydrogen concentration change during empty stomach and after eating different substrate.
方法采用不同底物试餐测定空腹和试餐后呼气氢浓度动态变化，判断消化道功能状态。
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