Ascaridatosis (adult and juvenile). Parasitic infestations (protozoa, worms, etc.)
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Lang, T. 1988 Hysterothylacium aduncum (Nematoda) in Baltic cod (Gadus morhua L.). ICES C.M. 1988/J:20. (Ref. 6022)
http://www.fishbase.org/references/FBRefSummary.php?id=6022&speccode=69
