* separar palavras-chave com vírgula
Melhores sites Health 1-15:
1.
walmart.com 
520,566

2.
webmd.com 
474,100

3.
cbc.ca 
387,374

4.
sciencedaily.com 
259,491

5.
coupons.com 
234,036

6.
ucf.edu 
225,470

7.
uwaterloo.ca 
213,270

8.
tufts.edu 
194,012

9.
manithan.com 
160,348

10.
thestudentroom.co.uk 
157,956

11.
anabel.al 
127,379

12.
dnaindia.com 
109,297

13.
brainpop.com 
98,486

14.
brobible.com 
91,728

15.
wn.com 
68,013

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