[1] Shandong Univ, Sch Med, Dept Physiol, Jinan 250012, Shandong, Peoples R China
[2] Shandong Univ, Sch Med, Key Lab Med Neurol, Jinan 250012, Shandong, Peoples R China
[3] Jinan Nursing Vocat Coll, Dept Microorganism, Jinan 250012, Shandong, Peoples R China
[4] Shandong Univ, Sch Med, Inst Psychol, Jinan 250012, Shandong, Peoples R China