[1] Mt Vernon Hosp, Northwood HA6 2RN, Middx, England
[2] Essex Cty Hosp, Colchester, Essex, England
[3] Univ Cattolica, Rome, Italy
[4] Osped S Luigi, Catania, Italy
[5] Salzburg Hosp, Salzburg, Austria
[6] Med Univ, Vienna, Austria
[7] Bristol Myers Squibb Pharmaceut Res Inst, Braine Lalleud, Belgium