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Table 1 Table of excluded studies

From: Intestinal dysbiosis in preterm infants preceding necrotizing enterocolitis: a systematic review and meta-analysis

Study

Reason for exclusion

Schwiertz 2003 [57]

A study of 29 preterm infants by PCR-DGGE analysis of which only one case of NEC was observed. No comparison of NEC and controls.

Bjorkstorm 2009 [58]

Only stool cultures and fecal calprotectin were measured.

LaTuga 2011 [59]

A study of eleven ELBW infants was excluded as there were no direct comparison of NEC and controls.

Morowitz 2011 [49]

Community genomic analysis at the strain level in one premature infant was excluded because the study did not compare NEC and controls.

Sharon 2013 [60]

Time shifts in community genomics was excluded because the study did not compare NEC and controls.

Carlisle 2013 [10]

A review was excluded.

Grishin 2013 [61]

A review was excluded.

Torraza 2013 [56]

A review was excluded.

Taft 2014 [55]

Description of the microbiome in preterm infants without NEC or sepsis and not a comparison of NEC with controls.

Raveh-Sadka 2015 [62]

Not a comparison of NEC with controls.