Uterine isthmus contractions: real-time ultrasound

Affiliations

• ¹ Maternal and Fetal Medicine Group, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain. Electronic address: alba.fl.88@gmail.com.
• ² Maternal and Fetal Medicine Group, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain; Departament de Pediatria, Obstetrícia i Ginecologia i Medicina Preventiva i Salut Pública, Universitat Autònoma de Barcelona, Bellaterra, Spain.