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. 2020 Dec 25;2020(12):CD004454. doi: 10.1002/14651858.CD004454.pub4

1. Gestational age parameters for included trials.

Trial	Minimum (weeks^+days)	Maximum (weeks^+days)
Amorim 1999	28⁺⁰	34⁺⁶
Attawattanakul 2015	34⁺⁰	36⁺⁶
Balci 2010	34⁺⁰	36⁺⁶
Block 1977	Not reported	36⁺⁶
Collaborative 1981	26⁺⁰	37⁺⁰
Dexiprom 1999	28⁺⁰	34⁺⁶
Fekih 2002	26⁺⁰	34⁺⁶
Gamsu 1989	Not reported	34⁺⁶
Garite 1992	24⁺⁰	27⁺⁶
Gyamfi‐Bannerman 2016	34⁺⁰	36⁺⁶
Kari 1994	24⁺⁰	31⁺⁶
Lewis 1996	24⁺⁰	34⁺⁶
Liggins 1972b	24⁺⁰	36⁺⁶
Lopez 1989	27⁺⁰	35⁺⁰
Mansouri 2010	35⁺⁰	36⁺⁶
Morales 1989	26⁺⁰	34⁺⁶
Morrison 1978	Not reported	34⁺⁰
Nelson 1985	28⁺⁰	34⁺⁶
Ontela 2018	34⁺⁰	36⁺⁶
Porto 2011	34⁺⁰	36⁺⁶
Qublan 2001	27⁺⁰	34⁺⁶
Schutte 1980	26⁺⁰	32⁺⁶
Schmidt 1984	26⁺⁰	32⁺⁰
Shanks 2010	34⁺⁰	36⁺⁶
Silver 1996	24⁺⁰	29⁺⁶
Teramo 1980	28⁺⁰	35⁺⁶
WHO 2020	26⁺⁰	33⁺⁶