* separar palavras-chave com vírgula
Melhores sites health 1-15:
1.
walmart.com 
520,733

2.
webmd.com 
474,100

3.
cbc.ca 
375,957

4.
coupons.com 
276,356

5.
sciencedaily.com 
264,274

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.
dnaindia.com 
109,297

12.
brainpop.com 
98,486

13.
brobible.com 
91,728

14.
wn.com 
68,013

15.
swansonvitamins.com 
57,876

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