DOI:
10.1055/s-00000112
ZWR - Das Deutsche Zahnärzteblatt
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References
NCHS, National Center for Health Statistics.
Third National Health and Nutrition Examination Survey (NHANES III), 1988 – 1994. Centers for Disease Control, public use data file no. 7 – 0627.
Hyattsville/Maryland: Centers for Disease Control; 1997
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