German health group Siemens Healthineers (SHLG.DE) said on Sunday it was buying U.S cancer treatment device maker Varian Medical Systems Inc (VAR.N) for $16.4 billion (12.5 billion pounds), giving it a foothold in the oncology sector. The takeover seeks to create a global leader in cancer care solutions by 2025. Industrial conglomerate Siemens (SIEGn.DE), which spun off Healthineers in 2018 but retains control, said it will provide bridge financing for ...