CJCP     2022 24 (5):  591-595    ISSN: 1008-8830  CN: 43-1301/R Application of ultrasound-guided central venous catheterization at various sites in infants with shock TAN Zi-Feng, MA Ke-Ze, LAI Zhi-Jun Pediatric Intensive Care Unit, Dongguan Children's Hospital Affiliated to Guangdong Medical University, Dongguan, Guangdong 523325, China (Email: 309971319@qq.com) Received: 2021-11-18  Revised: null  Online: null Supporting info