[The opisthorchiasis situation and its control in the Sumy district of the Ukraine].
D006801:Humans; D009889:Opisthorchiasis / Q000517:prevention & control*; D012041:Regional Medical Programs / Q000458:organization & administration*; D014455:Ukraine
Izuchenie situatsii po opistorkhozu i bor'be s nim v Sumskoĭ oblasti USSR.