array(2) { [0]=> int(0) [1]=> array(12) { ["ref_doc_id"]=> int(9018817) ["publisher_code"]=> int(28) ["base_code"]=> int(149) ["book_code"]=> int(1) ["page"]=> string(3) "105" ["sort"]=> int(187) ["body"]=> string(121) "1) American College of Physicians:Guidelines for medical treatment for stroke prevention. Ann Intern Med 121:54-55 (1994)" ["mol"]=> NULL ["pubmed"]=> string(7) "8198347" ["doi"]=> NULL ["group_id"]=> int(2) ["internal_flag"]=> bool(false) } }