Donald Trump called out Hillary Clinton to release “detailed medical records” in a tweet Sunday, saying he was willing to release his records as well. His allies and others on both sides of the political aisle have also questioned Clinton’s health in recent days.

“I have no problem in doing so!” Trump said. “Hillary?” says Clinton received a clean bill of health from her doctor after a detailed two page letter was released.

Her doctor claims the records that some conservative websites are circulating of the Democratic nominee are fake.

Trump critics and liberals are calling on Trump to release his tax returns first if he wants to see Clinton’s medical records. Trump has so far refused to release tax returns while he is under audit, though the IRS has said nothing prevents him from doing so.