Preference P.R.O. provides translation, cultural adaptation and validation of Patient-Reported Outcomes measures and Quality of Life instruments since 1991. The company is headquartered in the United States of America, with two locations – in San Francisco, CA and in Washington DC.

If you consider our services or looking for a job in a cultural adaptation field, please contact us:


Sergei Varshavsky, MD, PhD
162 Duncan Street
San Francisco, CA 94110
Phone: 1 650 575 2044
e-mail: svar@preference-pro.com
Olga Sheinina
1831 Belmont Rd., NW
Washington DC 20009
Phone: 202 441 64 82
e-mail: osheinina@preference-pro.com