array(2) { [0]=> int(0) [1]=> array(12) { ["ref_doc_id"]=> int(9817769) ["publisher_code"]=> int(56) ["base_code"]=> int(62) ["book_code"]=> int(1) ["page"]=> string(2) "41" ["sort"]=> int(5) ["body"]=> string(103) "1) Cancer Pain. In:A Monograph on the Management of Cancer Pain, Heath and Welfare Canada, Ottawa, 1984" ["mol"]=> NULL ["pubmed"]=> NULL ["doi"]=> NULL ["group_id"]=> int(3) ["internal_flag"]=> bool(false) } }