Non-Toxigenic <i>Clostridioides difficile</i> Strain E4 (NTCD-E4) Prevents Establishment of Primary <i>C. difficile</i> Infection by Epidemic PCR Ribotype 027 in an In Vitro Human... oleh Perezimor Etifa, César Rodríguez, Céline Harmanus, Ingrid M. J. G. Sanders, Igor A. Sidorov, Olufunmilayo A. Mohammed, Emily Savage, Andrew R. Timms, Jane Freeman, Wiep Klaas Smits, Mark H. Wilcox, Simon D. Baines