In Steve Jobs' final years, his successor Tim Cook offered him a partial liver transplant, but Jobs refused. Jobs suffered from ascites, a side effect of cancer, which caused so much pain he could barely get out of bed, Fast Company reports.

The detail is revealed in the upcoming book Becoming Steve Jobs, written by Brent Schlender and Rick Tetzeli. According to the book, Cook underwent tests and found he could provide Jobs with a partial liver transplant, which Jobs refused to accept.

"Steve only yelled at me four or five times during the 13 years I knew him, and this was one of them," Cook apparently said. After he offered the suggestion to Jobs, since they both had the same rare blood type, Jobs told Cook, "I'll never let you do that. I'll never do that." Meghan DeMaria