Former Iranian health minister Kamran Bagheri Lankarani, right, registers his candidacy for 

Former Iranian health minister Kamran Bagheri Lankarani, right, registers his candidacy for upcoming presidential election, at the interior ministry, in Tehran, Iran, Tuesday, May 7, 2013. Iranian authorities opened the registration process Tuesday for candidates in next month's presidential election that will pick a successor to President Mahmoud Ahmadinejad and offer a critical test for reformists battered after years of crackdowns.(AP Photo/Vahid Salemi)
Associated Press
Former Iranian health minister Kamran Bagheri Lankarani, right, registers his candidacy for upcoming presidential election, at the interior ministry, in Tehran, Iran, Tuesday, May 7, 2013. Iranian authorities opened the registration process Tuesday for candidates in next month's presidential election that will pick a successor to President Mahmoud Ahmadinejad and offer a critical test for reformists battered after years of crackdowns.(AP Photo/Vahid Salemi)
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