الإتاحة: https://doi.org/20.500.12511/3392Testhttps://doi.org/10.1007/s00408-011-9342-zTesthttps://hdl.handle.net/20.500.12511/3392Test
الإتاحة: https://doi.org/20.500.12511/7558Testhttps://hdl.handle.net/20.500.12511/7558Test
الإتاحة: https://doi.org/20.500.12511/7584Testhttps://hdl.handle.net/20.500.12511/7584Test