Contrast-enhanced Ultrasonography: A New Strategy to Confirm Cervical Pregnancy
Qingyun Song, MD, Sha Hu, Hong Luo, MD, Taizhu Yang, Qianqian Gao, MD, Fan Yang, MD
Advanced Ultrasound in Diagnosis and Therapy . 2019, (3): 123 -127 .  DOI: 10.37015/AUDT.2019.190821