AUTHOR=Gu Yinfang , Yi Lilan , Zou Xiaofang , Guo Longhua , Wu Guowu , Zhao Jingjing TITLE=Refractory hypokalemia and metabolic acidosis induced by undifferentiated connective tissue disease secondary to immune checkpoint inhibitors: a case report and literature review JOURNAL=Frontiers in Oncology VOLUME=14 YEAR=2024 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2024.1442605 DOI=10.3389/fonc.2024.1442605 ISSN=2234-943X