1. From the Groupe de Recherche en Physiopathologie Respiratoire (F.C., O.L.), Centre de Recherche Clinique, Universite de Sherbrooke PQ, Canada; The Institute for Medical Research at North Shore-LIJ (C.N.M.), Manhasset, NY; the Department of Internal Medicine (R.B.), Section of Rhumatology, Yale University School of Medicine, New Haven, Conn; and Unite des Soins Intensifs Medicaux (O.L.), CHU Sherbrooke, PQ, Canada.