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On April 17, Jellyfish Entertainment revealed, "Seo In Guk's medical re-examination date is April 27.  Please expect an official statement once the results come in."

The agency continued, "Also please understand that we are unable to reveal the exact examination location and time at this moment."

Meanwhile, Seo In Guk entered the military on March 28 to begin his basic training.  However, he took leave due to a medical condition after just 4 days as he was suffering from an osteochondral lesion.