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Estimated antibody geometric mean concentrations (GMCs; LU/mL) (thick lines) with their corresponding 95% Cis (ribbons) for HPV types 16/18/31/33/45/52/58 based on the power-law decay model, using individual antibody data measured up to 7.5 years (thin lines) after the second dose of vaccination among girls (birth cohort 2001). The dotted lines represent the estimated plateau GMCs using the power-law decay model (all types). LU, Luminex units.
