Characterization of TMAO productivity from carnitine challenge facilitates personalized nutrition and microbiome signatures discovery Microbiome Springer Nature Link Characterization of TMAO productivity from carnitine challenge facilitates personalized nutrition and microbiome signatures discovery Microbiome Springer Nature Link Trimethylamine N Oxide, More Red Meat for the Vascular Scientists Hypertension JCI l Carnitine in omnivorous diets induces an atherogenic gut microbial pathway in humans