Retinoic Acid Accelerates the Specification of Enteric Neural Progenitors from In-Vitro-Derived Neural Crest. - Frith TJR; Gogolou A; Hackland JOS; Hewitt ZA; Moore HD; Barbaric I; Thapar N; Burns AJ; Andrews PW; Tsakiridis A; McCann CJ (Stem cell reports, 2020)