6Buijs J,van Knapen F.Toxocara infection in children and the relation with allergic manifestations[J].Vet Q,1994,16(suppl 1):13S~14S.
7David E D,Lindquist W D.Determination of the specific gravity of certain helminth eggs using sucrose density gradient centrifugation[J].J Parasitol,1982,68:916~919.
8Inatomi Y,Murakami T,Tokunaga M,et al.Encephalopathy caused by visceral larva migrans due to Ascaris suum[J].J Neurol Sci,1999,164:195~199.