Erratum to: The use of balloons for uterine cervical ripening is associated with an increased risk of umbilical cord prolapse: Population based questionnaire survey in Japan [BMC Pregnancy Childbirth. 15, (2015) 4]

Hasegawa, J., Sekizawa, A., Ikeda, T., Koresawa, M., Ishiwata, I., Kawabata, M., & Kinoshita, K. (2016, July 12). Erratum to: The use of balloons for uterine cervical ripening is associated with an increased risk of umbilical cord prolapse: Population based questionnaire survey in Japan [BMC Pregnancy Childbirth. 15, (2015) 4]. BMC Pregnancy and Childbirth. BioMed Central Ltd. https://doi.org/10.1186/s12884-016-0948-2