[1] HARVARD UNIV, SCH PUBL HLTH, DEPT HLTH POLICY & MANAGEMENT, TECHNOL ASSESSMENT GRP, BOSTON, MA 02115 USA
[2] CUNY MT SINAI SCH MED, DEPT MED, NEW YORK, NY 10029 USA
[3] VET ADM MED CTR JAMAICA PLAIN, BOSTON, MA 02130 USA
[4] CUNY MT SINAI SCH MED, CLIN TRIALS UNIT, NEW YORK, NY 10029 USA
[5] CUNY MT SINAI SCH MED, DEPT BIOMATH SCI, NEW YORK, NY 10029 USA