1Application Evaluation of Four-Dimensional Ultrasound in the Screening of Fetal Malformation in the Second TrimesterLIU Jin, CHAI Mei, TIAN Ai-hong62-63
2A Study of the Relationship Between Postoperative Infection Rate, Postoperative Hospitalization Time and Gastric Tube Retention Rime in Patients with Oral CancerCAI Yan-qing, HE Xiao-ying, JIANG Li-jun, LIU Hong-yun148-149