array(2) { [0]=> int(0) [1]=> array(12) { ["ref_doc_id"]=> int(9028142) ["publisher_code"]=> int(28) ["base_code"]=> int(169) ["book_code"]=> int(1) ["page"]=> string(3) "104" ["sort"]=> int(293) ["body"]=> string(165) "1) Elsner CW, Tucker MJ, Sweitzer CL, et al:Multiple pregnancy rate and embryo number transferred during in vitro fertilization. Am J Obstet Gynecol 1997;177:350-357" ["mol"]=> NULL ["pubmed"]=> NULL ["doi"]=> NULL ["group_id"]=> int(2) ["internal_flag"]=> bool(false) } }