array(2) { [0]=> int(0) [1]=> array(12) { ["ref_doc_id"]=> int(9526315) ["publisher_code"]=> int(48) ["base_code"]=> int(101) ["book_code"]=> int(1) ["page"]=> string(2) "10" ["sort"]=> int(3) ["body"]=> string(95) "Lown B, Wolf M:Approaches to sudden death from coronary heart disease. Circulation 44:130, 1971" ["mol"]=> NULL ["pubmed"]=> string(7) "4104697" ["doi"]=> string(23) "10.1161/01.CIR.44.1.130" ["group_id"]=> int(2) ["internal_flag"]=> bool(false) } }