الإتاحة: https://ul.qucosa.de/id/qucosa%3A85315Testhttps://ul.qucosa.de/api/qucosa%3A85315/attachment/ATT-0Test/
الإتاحة: https://doi.org/10.1093/jn/nxz071Testhttp://hdl.handle.net/11562/1013436Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f209725c5a1c0af6fb0b7461831509cfTesthttp://hdl.handle.net/11562/1013436Test