1
Έκδοση 1939
Full text available from BMJ Journals: 01/01/1939 to 12/31/1995
Full text available from Health & Medical Collection: 01/01/1939 to 12/31/1995
Full text available from Science Database: 01/01/1939 to 12/31/1995
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
2
Έκδοση 1997
Full text available from Health & Medical Collection: 07/01/1999 to 12/31/2003
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
5
Full text available from Health & Medical Collection: 10/01/2003 to 2006
Full text available from Healthcare Administration Database: 10/01/2003 to 2006
Full text available from Psychology Database: 10/01/2003 to 2006
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
8
14
Full text available from Health & Medical Collection: 01/01/1998 to 11/30/2015
Ηλεκτρονική πηγή Επιστημονικό περιοδικό