42
Argitaratua 2003
Full text available from ABI/INFORM Global: 2003 to 09/30/2010
Baliabide elektronikoa Aldizkaria
49
Argitaratua 1999
Full text available from ABI/INFORM Global: 01/01/1995 to 12/31/1998
Baliabide elektronikoa Aldizkaria
52
Argitaratua 1997
Full text available from Nursing & Allied Health Database: 11/01/2003 to 11/30/2009
Baliabide elektronikoa Aldizkaria
58