Factors associated with four atypical cases of congenital syphilis in England, 2016 to 2017: an ecological analysis Furegato, Martina and Fifer, Helen and Mohammed, Hamish and Simms, Ian and Vanta, Paul and Webb, Sharon and Foster, Kirsty and Kingston, Margaret and Charlett, André and Vishram, Bhavita and Reynolds, Claire and Gill, Noel and Hughes, Gwenda, Eurosurveillance, 22, 17-00750 (2017), https://doi.org/10.2807/1560-7917.ES.2017.22.49.17-00750