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Variable Importance in Projection (VIP) scores for the top 15 metabolites contributing to variation in preoperative metabolic fingerprints of non-hypoxemic and hypoxemic neonates. MMA indicates methylmalonic acid; AMP, adenosine monophosphate; NAG-1-P, N-acetyl-glutamine-1-phosphate; 5-MTP, 5-methoxytryptophan; indole-3-CA, indole-3-carboxylic acid; N-Ac-Glutamine, N-acetyl-glutamine
