In terms of the laboratory data at hospital admission, for the pooled data the median WBC count was 2900 (/mm 3 ), and the median PLT count was 125 (910 3 /mm 3 ); a significant difference in PLT count was observed among reports ( Table 2) . Based on available data on the liver function tests (three reports), the median AST and ALT levels were 280 and 52 IU/L, respectively; the levels of both liver enzymes were significantly different among reports (Table 2) .