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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ |
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E05 Investigative Techniques D008919 + E05.318 Epidemiologic Methods D004812 + E05.318.780 Epidemiologic Research Design D015340 + E05.318.780.074 Control Groups D035061
H01 Natural Sciences D010811 + H01.770 Science D012586 + H01.770.644 Research D012106 + H01.770.644.728 Research Design D012107 + H01.770.644.728.149 Control Groups D035061