URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::745300df615669e779111c5c15b13fd9https://doi.org/10.1093/aje/kwn306
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6410c062fe0919ef92beb217bb528b15https://pubmed.ncbi.nlm.nih.gov/10489997
URL الوصول: https://explore.openaire.eu/search/publication?articleId=pmid________::44620121830e165f5d129f9a4822bd06https://pubmed.ncbi.nlm.nih.gov/9290500
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c3ca94f0eff802d0cfe4b595d11fb3chttps://pubmed.ncbi.nlm.nih.gov/1626544