[1] CTR HOSP REG & UNIV LILLE,HOP HURIEZ,MALADIES APPAREIL DIGEST & NUTR CLIN,F-59037 LILLE,FRANCE
[2] CTR HOSP REG & UNIV LILLE,HOP HURIEZ,SERV CHIRURG ADULTE OUEST,F-59037 LILLE,FRANCE
[3] FAC MED LILLE,SERV ANAT & CYTOL PATHOL,F-59045 LILLE,FRANCE
[4] UNIV CONNECTICUT,COLL NAT RESOURCES,DEPT PATHOBIOL,STORRS,CT