Sequelae symptomsAny of the following symptoms777/1149 (68%)583/1188 (49%)*p<4·17 × 10−3 for the comparison of 12-month with 6-month follow-up.650/1190 (55%)†p<4·17 × 10−3 for the comparison of 2-year with 6-month follow-up.‡p<4·17 × 10−3...