Full article: Effects of high dose L carnitine supplementation on diaphragmatic function in patients with respiratory failure: A randomized clinical trial Left heart failure: A review of clinical status and meta analysis of diagnosis and clinical management methods Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications L Carnitine Linus Pauling Institute Oregon State University Lifestyle Modifications for Preventing and Treating Heart Failure JACC