Gregg Allman‘s continuing health woes are forcing the delay of a planned book tour to promote his forthcoming memoir, My Cross to Bear, reports Rolling Stone.

According to the magazine, the veteran rocker will undergo diagnostic cardiac testing at the Mayo Clinic’s facility in Jacksonville, FL.  The tests are needed to determine whether Allman will require additional care after a recent hernia operation.

In 2010, Allman, who suffers from hepatitis C, received a liver transplant at the same facility, Rolling Stone notes.

“I’ve been working on the book for years and am grateful for all the support I’ve received in putting it together,” the magazine quotes Allman as saying in a statement.  “As soon as doctors give me the thumbs up to go back on the road, I will be heading out onto my book tour and I can’t wait to meet all of my fans.”

Besides a string of book signings that were scheduled to begin next Tuesday in New York, appearances on The Colbert Report and Piers Morgan Tonight are among those that Allman has had to delay. Rolling Stone notes that the testing is not expected to change the Allman Brothers Band‘s summer tour schedule.

My Cross to Bear is scheduled for released Tuesday, May 1 from William Morrow.

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