观点网讯：3月19日，汇丰控股有限公司宣布，已获得香港联合交易所有限公司的豁免，允许公司发行或有可转换证券（OCBs）的数量超过一般授权规定的占公司已发行股本20%的上限。这一豁免基于香港上市规则第13.36(1)条的规定。

Background: Glioblastoma (GBM) is the most common primary brain tumor in adulthood. Initial diagnosis is generally based on clinical and MRI findings, which may be misinterpreted as other neurological ...