

@article {11739,
	title = {{Serun vitamin B12 levels and incidence of tapeworm anemia in a population heavily infected with Diphyllobothrium latum}},
	journal = {The American Journal of Tropical Medicine and Hygiene},
	volume = {9},
	year = {1961},
	pages = {606{\textendash}612},
	author = {Nyberg, W and Grasbeck, R and Saarni, M and Von Bonsdroff, B}
}
