1683-9803
1683-9803
S1683-98032021000300159
10.31698/ped.48032021002
Brazil
Spain
00
12
2021
00
12
2021
48
3
159
161
[
2021
19
]
[
2021
19
]
[
2021
19
]
[
Johns Hopkins Coronavirus Resource Center
]
[
2021
18
2
2
]
[
2021
18
3
3
]
[
2021
18
1
1
]
[
2021
19
]
[
2020
17
6
6
]
[
2021
19
]
[
2021
18
4
4
]
[
2021
9
1
1
13
]
[
2021
48
1
1
65-72
]
[
2018
29
1
1
78-85
]