الإتاحة: https://doi.org/20.500.12210/29633Testhttps://hdl.handle.net/20.500.12210/29633Test
الإتاحة: https://doi.org/10.1186/s13054-015-0980-zTest
الإتاحة: http://hdl.handle.net/2042/546Test
الإتاحة: http://catalogue.bnf.fr/ark:/12148/cb36865906kTest