[1] Mt Sinai Med Ctr, New York, NY 10029 USA
[2] Hannover Med Sch, D-30623 Hannover, Germany
[3] Univ Wisconsin, Milwaukee, WI 53201 USA
[4] Cent Hosp, Potosi, Mexico
[5] Hosp Geral Bonsuccesso, Rio De Janeiro, Brazil
[6] Univ Klin Chirurg, Vienna, Austria
[7] Westmead Hosp, Westmead, NSW, Australia
[8] Bristol Myers Squibb Co, Princeton, NJ USA
[9] Emory Univ, Med Ctr, Atlanta, GA 30322 USA