Former international captains raise fresh concerns over Imran Khan's health in letter to Pakistan PM

The letter was signed by Michael Atherton, Alex Blackwell, Allan Border, Michael Brearley, Greg Chappell, Ian Chappell, Belinda Clark, Alastair Cook, Michael Gatting, Sunil Gavaskar, Kapil Dev, Lee Germon, Adam Gilchrist, David Gower, Kim Hughes, Nasser Hussain, Clive Lloyd, Arjuna Ranatunga, Andrew Strauss, Dilip Vengsarkar, Steve Waugh and John Wright.