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Trend, and seasonal and residual (remainder) components derived from the seasonal decomposition of time series by Loess decomposition of monthly Japanese encephalitis case, during the five study periods in Gansu Province, China. (A) 1968–1977, (B) 1978–1987, (C) 1988–1997, (D) 1998–2007, and (E) 2008–2017.
