4
Έκδοση 1997
Full text available from Research Library: 07/01/2002 to 07/31/2004
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
6
Έκδοση 1993
Full text available from Education Database: 01/01/1998 to 05/31/2006
Full text available from Nursing & Allied Health Database: 01/01/1998 to 05/31/2006
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
8
Full text available from East Europe, Central Europe Database: 03/01/2011 to present
Full text available from Health & Medical Collection: 03/01/2011 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
10
Full text available from Education Database: 07/01/2002 to 11/30/2016
Full text available from Health & Medical Collection: 07/01/2002 to 11/30/2016
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
12
Έκδοση 2008
Full text available from East Europe, Central Europe Database: 01/01/2008 to present
Full text available from Education Database: 01/01/2008 to present
Full text available from Research Library: 01/01/2008 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
13
Full text available from Consumer Health Database: 01/01/2010 to 12/31/2010
Full text available from Health & Medical Collection: 01/01/2010 to 12/31/2010
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
16
Full text available from East Europe, Central Europe Database: 05/01/2009 to present
Full text available from Health & Medical Collection: 05/01/2009 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
17
Full text available from Consumer Health Database: 10/01/1996 to present
Full text available from Education Database: 10/01/1996 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό