1
Έκδοση 2002
...National Institutes of Health (U.S.). PubMed Central....
Full text available from Health & Medical Collection: 01/01/2009 to present
Full text available from Public Health Database: 01/01/2009 to present
Ηλεκτρονική πηγή Περιοδική έκδοση
2
Έκδοση 2012
...National Institutes of Health (U.S.). PubMed Central....
Full text available from Advanced Technologies & Aerospace Database: 01/01/2007 to 2012
Full text available from Health & Medical Collection: 01/01/2007 to 2012
Full text available from Middle East & Africa Database: 01/01/2007 to 2012
Ηλεκτρονική πηγή Περιοδική έκδοση
3
Έκδοση 2000
...National Institutes of Health (U.S.). PubMed Central....
Full text available from Health & Medical Collection: 01/01/2009 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
4
Έκδοση 2000
...National Institutes of Health (U.S.). PubMed Central....
Full text available from Health & Medical Collection: 07/29/2005 to 10/11/2005
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
5
Έκδοση 1982
...National Institutes of Health (U.S.)...
Full text available from Environmental Science Database: 01/01/2007 to present
Full text available from Health & Medical Collection: 01/01/2007 to present
Full text available from Public Health Database: 01/01/2007 to present
Κυβερνητικό Έγγραφο Ηλεκτρονική πηγή Περιοδική έκδοση
7
...National Institutes of Health (U.S.)...
Full text available from Health & Medical Collection: 01/01/1990 to 12/31/1998
Full text available from Nursing & Allied Health Database: 01/01/1990 to 12/31/1998
Full text available from Psychology Database: 01/01/1990 to 12/31/1998
Full text available from Research Library: 01/01/1990 to 12/31/1998
Κυβερνητικό Έγγραφο Ηλεκτρονική πηγή Επιστημονικό περιοδικό
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