Media Source API — MDN Web Docs
一是拓展适用范围。将伦理审查与人类遗传资源管理要求纳入标准体系，并对现场调查，包括组织实施、问卷调查、体格检查等环节进行了全面规范。
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Pallab GhoshScience Correspondent
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Most cases in children are mild, although they will feel unwell and will need to miss school or nursery for several days.