By Julien Pretot UTRECHT, Netherlands (Reuters) - The Astana team were plunged into controversy again when Dutch rider Lars Boom faced being thrown out of the Tour de France because of low Cortisol levels on the eve of the start. Astana, the team of defending Tour champion Vincenzo Nibali, are members of the MPCC (Movement for Credible Cycling) that applies stricter rules than the International Cycling Union (UCI) and the World Anti-Doping Agency (WADA). "According to article 9 of the MPCC the return to competition will be made after at least eight days of rest," the MPCC said in a statement on Friday. More...