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Table 1 Faecal sample collection at every timepoint of the Pregnancy and Birth Cohort in Northwest China (PBCC)

From: The impact of early-life antibiotics and probiotics on gut microbial ecology and infant health outcomes: a Pregnancy and Birth Cohort in Northwest China (PBCC) study protocol

Stage

Timepoints

Period

Faecal sample

Sample source

Pregnancy

T1

1st trimester

√

 

T2

2nd trimester

√

Mother

T3

3rd trimester

√

 

Delivery

T4

Birth

√

Infant

After birth

T5

42 days

√

 

T6

3 months

√

 

T7

6 months

√

Infant

T8

12 months

√

 

T9

18 months

√

 

T10

24 months

√

 
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BMC Pediatrics

ISSN: 1471-2431

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