Surgery to remove necrotic tissue, cover skin defects and correct deformities.

外科手术切除坏死组织、修复皮肤缺损和矫正畸形。

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If you have to cough or sneeze you should cover your mouth with a tissue or cough into your shoulder or elbow to prevent spread of virus.

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Collins, a 20-year-old sophomore at Boston's Emerson College, learned soon after he joined the Phi Alpha Tau fraternity that his insurance company declined to cover surgery to remove breast tissue to flatten his chest.

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