Status and influence factors of pre-school children's emotional and behavioral problems in rural areas of Shandong province
YU Yuan-hao, XU Ling-zhong, GAI Ruo-yan, CUI Yi-meng, YANG Ping, LI Jun
journal1 . 2014, (9): 906 -909 .  DOI: 10.11852/zgetbjzz2014-22-09-04