Mahmoud Sarsak, midfielder for the Palestinian national football team, has been on hunger strike for 82 days in protest of his detention without trial. Physicians for Human Rights has expressed "grave concern for his life." Sarsak (25) is a resident of the Rafah refugee camp and a prominent player in the Palestinian national football team. On July 22, 2009 Sarsak arrived at the Erez checkpoint between Gaza and Israel with a valid permit to enter the West Bank, where he was seeking to advance his sporting career, after already having received offers from a German football team. However, the permit didn't…