Microbial groups isolated from meconium and feces of preterm neonates in this study.

*Mean bacterial counts were expressed as log10 CFU/mL. **Friedman’s tests. N, total number of samples. n, number of samples where a specific microbial group was detected. Other Gram-positive bacteria included the following genera: Corynebacterium, Micrococcus and Rothia. Other Gram-negative bacteria included the following genera: Citrobacter, Enterobacter, Erwinia, Morganella, Pantoea, Proteus, Pseudomonas, Shigella and Stenotrophomonas.* 细菌平均计数以log10 CFU/mL（菌落形成单位每毫升，Colony-Forming Unit）表示。 ** 弗里德曼检验(Friedman’s test)。 N 为总样本量。 n 为检出特定微生物类群的样本数量。 其他革兰氏阳性菌包含以下菌属：棒杆菌属(Corynebacterium)、微球菌属(Micrococcus)以及罗氏菌属(Rothia)。 其他革兰氏阴性菌包含以下菌属：柠檬酸杆菌属(Citrobacter)、肠杆菌属(Enterobacter)、欧文氏菌属(Erwinia)、摩根菌属(Morganella)、泛菌属(Pantoea)、变形杆菌属(Proteus)、假单胞菌属(Pseudomonas)、志贺氏菌属(Shigella)以及寡养单胞菌属(Stenotrophomonas)。