1981-1969
1981-1969
S1981-19692024000100206
10.5380/jpe.v18i1.96061
South Africa
United States
South Africa
00
00
2024
00
00
2024
18
[
2017
117
5
5
434-51
]
[
2020
26
6
6
593-601
]
[
2018
55
6
6
821-45
]
[
2012
37
4
4
191-222
]
[
2005
]
[
1979
]
[
1997
25
]
[
1998
4
2
2
279-301
]
[
2014
]
[
COCHRANE DATABASE OF SYSTEMATIC REVIEWS
2010
1
1
]
[
2000
88
5
5
416-25
]
[
2017
36
4
4
253-63
]
[
2012
11
1
1
12-3
]
[
2005
3rd
1-32
]
[
2014
20
5
5
568-94
]
[
2015
40
121-30
]
[
2019
]
[
2022
25
3
3
745-64
]
[
2016
]
[
2006
]
[
1970
]
[
2013
]
[
2022
22
1
1
7-35
]
[
2006
37
6
6
]
[
2018
34
4
4
285-91
]
[
2016
46
82-93
]
[
2014
8
1
1
]
[
2020
91
2
2
638-60
]
[
2010
]
[
2018
73
1
1
26
]
[
2000
4
1
1
30-7
]
[
2020
21
4
4
476-92
]
[
2000
71
3
3
543-62
]
[
2016
48
53-65
]
[
2001
56
3
3
227
]
[
1993
]
[
2014
9
239-46
]
[
2019
3
10
10
1026-7
]
[
2023
35
35
35
]
[
2020
18
1
1
]
[
2017
16
1
1
]
[
2012
8
1
1
i-192
]
[
2013
19
10
10
765-74
]
[
2023
52
5
5
625-38
]
[
2016
1st
]
[
2020
]
[
1999
]
[
1999
]
[
]
[
2016
]
[
2018
97
1
1
39-53
]
[
2011
81
1
1
1-17
]
[
2020
1
1
1
]
[
2017
73
6
6
638-51
]
[
2020
15
3
3
]