(Corrects variants targeted by booster shots in paragraph 8) By Doina Chiacu WASHINGTON (Reuters) -Moderna Inc’s chief medical officer said on Sunday the company’s vaccine for children under 6 years old will be ready for review by a Food and Drug Administration panel when it meets in June. Moderna sought emergency use authorization from the FDA on Thursday. An advisory panel of experts to the U.S. drug regulator will meet in June to review the request. “I think the FDA now have all of the core fundamental data they need to be able to begin an application review. So yes, we’re very confident,” …