3061544 LTFU long-term follow-up 203 1226561 LTF long-term follow-up 14 3031112 LFTU long-term follow-up 2 2126642 LTFUP long-term follow-up 2 251848 LF long-term follow-up 1 1198608 LFU long-term follow-up 1 264014 LT long-term follow-up 1 467397 Tf long-term follow-up 1