Why was 2PM's Junsu absent on Music Core?

Although many fans were sorely missing a certain leader during 2PM's performance on the 200th episode special of�Music Core this evening, he wasn't the only one missing from the stage - heartthrob Junsu was nowhere to be seen, much to the confusion of many viewers. In a phone interview with Star News,�JYP Entertainment revealed�that Junsu was absent from the stage because he was in the middle of a surgery for rhinitis, aka internal inflammation of the nose. Although the idea of having a runny nose seems pretty trivial, symptoms can get pretty serious, as was the case for Junsu. Last August, there were rumors floating around that Junsu had already gotten a surgery, but it looks like those rumors were false, or that the August surgery wasn't enough. During the phone interview, the JYPE rep said,

"Junsu received surgery on February 16 for rhinitis. He is recovering and is currently in stable condition. He received surgery because album promotions were over. However, since 2PM was scheduled to perform the 200th episode special for Music Core, 2PM had to perform with only five members."