array(2) { [0]=> int(29) [1]=> array(12) { ["ref_doc_id"]=> int(8098045) ["publisher_code"]=> int(4) ["base_code"]=> int(10) ["book_code"]=> int(1) ["page"]=> string(4) "1011" ["sort"]=> int(3967) ["body"]=> string(146) "1) Ries LA G, Hankey BF, et al:Cancer statistics Review 1973-1988, Bethesda, Md.:National Institute of Health, NIH publication, No. 91:2789, 1991." ["mol"]=> NULL ["pubmed"]=> NULL ["doi"]=> NULL ["group_id"]=> int(44) ["internal_flag"]=> bool(false) } }