TY - JOUR AU - Siau, K; Anderson, J T; Valori, R TI - Certification of UK gastrointestinal endoscopists and variations between trainee specialties: results from the JETS e-portfolio JO - Endosc Int Open VL - 7 PY - 2019 DO - 10.1055/a-0839-4476 L3 - PubMed-ID: 30957005 SP - E551 EP - E560 N1 - et al. ER -