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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 jan 1940 ano - Austin Bradford Hill devises the randomized trial
Adicionado na linha do tempo:
Cancer History
By
Anna
25 set 2017
0
0
634
Data:
1 jan 1940 ano
Agora
~ 85 years ago
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