الإتاحة: https://doi.org/10.1007/978-1-0716-3163-8_24Test

الإتاحة: https://digitalcommons.library.tmc.edu/uthsph_docs/150Test
https://digitalcommons.library.tmc.edu/context/uthsph_docs/article/1133/viewcontent/nihms_1922060.pdfTest