Background : Henoch - Schonlein purpura nephritis ( HSPN ) is a common secondary glomerulonephritis in children.过敏性紫癜性肾炎 ( HSPN ),是儿童时期常见的继发性肾脏疾病.Thymic involution caused by child abuse might lead to secondary immunodefi...
...a bird nestling in the timbers of the roof.栖息于屋顶横梁上的鸟The timbers of similar houses were painted with pitch.类似房屋所用的栋木刷了沥青。Only the finest timbers and veneers are used.只用上好的木料和饰面板。The ship's timbers groaned audibly...