Maternal and neonatal outcomes associated with COVID-19 infection: a systematic review - Smith, Vinayak; Seo, Densearn; Warty, Ritesh; Payne, Olivia; Sallih, Mohamed; Chin, ken Lee; Ofori-Asenso, Richard; Krishnan, Sathya; Costa, Fabrício da Silva; Vollenhoven, Beverley; Wallace, Euan (PLOs One, 2020)