Health, 06.11.2020 18:50 cajunldy2001
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Health, 22.06.2019 15:20, timozy95
[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine. what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.
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Health, 23.06.2019 08:30, Dragonskeld
Which a hammer strikes a compound formed by covalent bounds
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Health, 23.06.2019 23:30, neneleey1941
The idea that some faces are inherently more attractive than others is supported by research demonstrating that people we like seem more attractive to us. people prefer averaged composite faces to individual faces. people from different cultures enhance their appearance in different ways. standards of beauty change over time.
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