array(2) {
  [0]=>
  int(0)
  [1]=>
  array(12) {
    ["ref_doc_id"]=>
    int(8055665)
    ["publisher_code"]=>
    int(2)
    ["base_code"]=>
    int(53)
    ["book_code"]=>
    int(1)
    ["page"]=>
    string(3) "106"
    ["sort"]=>
    int(182)
    ["body"]=>
    string(131) "1) DeFronzo RA et al:Efficacy of metformin in patients with non-insulin-dependent diabetes mellitus. N Engl J Med 333:541-549, 1995"
    ["mol"]=>
    NULL
    ["pubmed"]=>
    string(7) "7623902"
    ["doi"]=>
    string(27) "10.1056/NEJM199508313330902"
    ["group_id"]=>
    int(3)
    ["internal_flag"]=>
    bool(false)
  }
}