[1] Duke Clin Res Inst, Durham, NC USA
[2] Baylor Univ, Med Ctr, Dallas, TX USA
[3] Lady Davis Carmel Med Ctr, Haifa, Israel
[4] Univ Nacl Autonoma Mexico, Mexico City, DF, Mexico
[5] Reg Hosp Viborg, Viborg, Denmark
[6] Philippine Gen Hosp, Manila, Philippines
[7] Bayer AG, Wuppertal, Germany
[8] Merck & Co Inc, Rahway, NJ USA
[9] Duke Natl Univ Singapore, Natl Heart Ctr Singapore, Singapore, Singapore
[10] Univ Med Ctr Groningen, Groningen, Netherlands
[11] Wroclaw Med Univ, Wroclaw, Poland
[12] Univ Alberta, Edmonton, AB, Canada