اضغط هنا لزيارة موقع الرابط
http://loop.frontiersin.org/publications/47711173
http://opendepot.org/4242/
https://www.mysciencework.com/publication/show/pain-experience-profile-children-cancer-prospective-analysis-2216-treatment-days-developing-country-b77e8b2b
https://www.infona.pl/resource/bwmeta1.element.ID-ea056bd0-4ebc-420e-acec-921f0b1aca18
https://works.bepress.com/ahmed-mohammed-morsy/1/
https://works.bepress.com/ahmed-mohammed-morsy/2/
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