Study protocol: Fecal Microbiota Transplant combined with Atezolizumab/Bevacizumab in Patients with Hepatocellular Carcinoma who failed to achieve or maintain objective response to Atezolizumab/Bevacizumab – the FAB-HCC pilot study - Katharina Pomej; Adrian Frick; Bernhard Scheiner; Lorenz Balcar; Larissa Pajancic; Anton Klotz; Abelina Kreuter; Katharina Lampichler; Katharina Regnat; Kerstin Zinober; Michael Trauner; Dietmar Tamandl; et al. (PLoS ONE, 2025)