 McKesson Corp. MCK, 0.54 and HCA Healthcare Inc. HCA, 1.56 announced Thursday an agreement to form a joint venture to advance cancer care and boost access to oncology research. As part of the agreement, McKessons U.S. Oncology Research USOR and HCAs Sarah Cannon Research Institute SCRI will combine to form a oncology research organization aimed at accelerating drug development and increasing availability and access to clinical trials. 