Two Indian-American authors have been shortlisted for the 30,000 pound Wellcome Book Prize. The award celebrates fiction and non-fiction works engaged with the topics of health and medicine. <br/><br/>Siddhartha Mukherjee is on the list of the annual prize for his study of genetics and mental health in his book 'The Gene'. He is joined by fellow Indian-American author Paul Kalanithi, who could become the first posthumous winner of the prize for his life-affirming reflection on facing mortality 'When Breath Becomes Air'.<br/><br/>The winner will be announced at a ceremony at Wellcome Collection on the 24th of next month.