BACKGROUND Several cutaneous manifestations such as urticarial rash,erythematous patches and chilblain-like lesions have......

运用文献资料法，分析了学校健康教育的现状，探讨了学校体育教育与健康教育的关系以及两者相结合的价值和意义，并提出学校体育与健康教......

This work presents the results of investigations to develop and implement methods to effectively collect and purify infi......