Other Bibliography Search Engines

National Library of Medicine's literature search site
http://www.pubmed.gov


Quality of Life Indstruments Database
This contains a list of over 1000 PRO instruments and is structured in two levels of access:
- a first level accessible to all users free of charge and which contains for over 300 instruments the following information: full abbreviated name of the questionaire, author(s), objective, pathology, disease, type of instrment, population, mode of administration, original language and list of translations.
- a second level is based on yearly subscriptions

http://www.qolid.org