To all of you and on the behalf of Greg, I want to inform you that Greg fell badly sick (pneumonia) and has been hospitalized for more than a week now. He is finally in the process of recovering after been in critical condition. If you'd like to visit him in the hospital, he's in Thorton Hospital here at UCSD. Best wishes for him joel Greg Michalski Stable Isotope Lab University of California, San Diego 9500 Gilman Dr. La Jolla, Ca. 92093-0356 858-534-6053