Like testing parachutes vs placebo backpacks.
-
-
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
-
-
This Tweet is unavailable.
-
There is a useful discussion of the ethical dilemma here https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4157320/ …
End of conversation
-
-
-
Does Mamma Bear include polio in her putative RCT and would she recruit baby bear?
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
-
-
They're also ignorant of the effectiveness of vaccines. In their minds, vaccines don't work, therefore the ethical argument is moot.
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
-
-
A ton of of education work to be done.
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.