[1] IECS Inst Clin Effectiveness & Hlth Policy, Buenos Aires, DF, Argentina
[2] Bristol Myers Squibb Co, Lima, Peru
[3] Bristol Myers Squibb Co, Buenos Aires, DF, Argentina
[4] Pfizer Colombia, Bogota, Cundinamarca, Colombia
[5] Pfizer Inc, New York, NY USA
[6] Bristol Myers Squibb Co, Mexico City, DF, Mexico
[7] Bristol Myers Squibb Co, Wallingford, CT 06492 USA