A Phase I Study of the Naturally Occurring Bioactive, Opioid Growth Factor, in Patients with Unresectable Hepatocellular Cancer. - Kimchi, Eric T.; Kaifi, Jussuf T.; Jiang, Yixing; Li, Guangfu; Avella, Diego M.; Gusani, Niraj J.; Schreibman, Ian; Waybill, Peter; McLaughlin, Patricia J.; Zagon, Ian S.; Smith, Jill P.; Staveley-O'Carroll, Kevin F. (Cancer Investigation, 2025)