[1] Ghent Univ Hosp, Ghent, Belgium
[2] Chung Shan Med Univ Hosp, Taichung, Taiwan
[3] Griffith Univ, Brisbane, Qld, Australia
[4] INIBIC Hosp Univ A Coruna, La Coruna, Spain
[5] Pfizer, Collegeville, PA USA
[6] Pfizer, New York, NY USA
[7] Pfizer, Buenos Aires, DF, Argentina
[8] Oregon Hlth & Sci Univ, Portland, OR 97201 USA