8.3 Trial quality control measures: ①Before the start of clinical trials, researchers (including nurses) must receive training for measurement of height, weight and head circumference; ②check measurement bed before measurement everyday. Researchers must compare scale on plastic flexible rule with that on standard steel rule and change plastic flexible if error >0.1cm. ③The pictures of the feces and eyes will be independently scored by 2 specialists under the condition of unknowing the group. ④The specialist must be responsible for experimental formula, counter locked, storage at room temperature away from light. The remaining experimental formula will be stored separately, registering number. At the end of trial, the remaining experimental formula will be sent back to sponsor.⑤Monitor: Monitor will be appointed by sponsor, ensuring subjects' interests during period of trial. Trial record and data report must be true, accurate, complete and correct, ensuring that trial must comply with both approved plan and Relevant laws.