URL الوصول: https://doaj.org/article/f73ffebfebed4fd7ae4ab037c0e372fe
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::151316faea4d52a3ffd0a5fe42585525https://pubmed.ncbi.nlm.nih.gov/32058410
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b77a98c3addfc659841c1f4471a536eahttp://hdl.handle.net/2066/172502
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd0f674f03609cb2b41051b564a70fc2https://doi.org/10.1136/bmjopen-2017-018006