Relationship between gastro-intestinal complaints and endotoxemia, cytokine release and the acute-phase reaction during and after a long-distance triathlon in highly trained men - Jeukendrup, A E; Vet-Joop, K; Sturk, A; Stegen, J H; Senden, J; Saris, W H; Wagenmakers, A J (Clin Sci (Lond), 2000)