Parechovirus B , more commonly called the Ljungan virus , was first discovered in the mid-1990s after being isolated from a bank vole near the Ljungan river in Medelpad county , Sweden .
Head entity: sweden Q34 31
Tail entity: medelpad Q210687 28
Relation (head \u2192 tail): P527
Inverse relation (tail \u2192 head): P361