On 2014 Jul 11, Mirko Spiroski commented:

Retraction

The article published by Ilankovic et al., 2013 [1] has been retracted by Editor-in-Chief because corresponding author published the similar paper in Psychiatria Danubina in 2014 [2]. An internal investigation has raised sufficient evidence of the originality in the first paper [1] and self plagiarism in the second paper [2]; as such, we retract this article from the literature on request by corresponding author and in accordance with guidelines and best editorial practices from the Committee on Publication Ethics. We apologize to our audience about this unfortunate situation.

References

[1] Ilankovic A, Damjanovic A, Ilankovic V, Milovanovic S, Petrovic D, Ilankovic N. Sleep Organisation in Depression and Schizophrenia: Index of Endogenous Periodicity of Sleep as a State Marker. Maced J Med Sci. 2013 Dec 15; 6(4):408-413.

[2] Ilanković A, Damjanović A, Ilanković V, Filipović B, Janković S, Ilanković N. Polysomnographic sleep patterns in depressive, schizophrenic and healthy subjects. Psychiatr Danub. 2014;26(1):20-6.

The retraction is located here: http://www.mjms.mk/Online/MJMS_2014_7_2/MJMS.1857-5773.2014-0380.pdf and here: http://www.degruyter.com/view/j/mjms.2014.7.issue-2/mjms.1857-5773.2014.0380/mjms.1857-5773.2014.0380.xml?format=INT

The retracted paper is located here: http://www.mjms.mk/Online/MJMS_2013_6_4/MJMS.1857-5773.2013-0335.pdf

On 2014 Jul 03, Jeffrey Beall commented:

The text in this article very closely matches the text in an article published in Volume 6, Issue 4 (Dec 2013) of the Macedonian Journal of Medical Sciences. That article is entitled "Sleep Organisation in Depression and Schizophrenia: Index of Endogenous Periodicity of Sleep as a State Marker."

The other article is located here: http://www.degruyter.com/view/j/mjms.2013.6.issue-4/mjms.1857-5773.2013.0335/mjms.1857-5773.2013.0335.xml?format=INT

Both articles have six authors. There are four authors common to both papers. Each article also has two authors that are not listed as an author on the counterpart paper.

I cannot tell which was published first; they both came out at about the same time. I request that both journals investigate this possible case of duplicate publication / plagiarism.

On 2014 Jul 03, Jeffrey Beall commented:

The text in this article very closely matches the text in an article published in Volume 6, Issue 4 (Dec 2013) of the Macedonian Journal of Medical Sciences. That article is entitled "Sleep Organisation in Depression and Schizophrenia: Index of Endogenous Periodicity of Sleep as a State Marker."

The other article is located here: http://www.degruyter.com/view/j/mjms.2013.6.issue-4/mjms.1857-5773.2013.0335/mjms.1857-5773.2013.0335.xml?format=INT

Both articles have six authors. There are four authors common to both papers. Each article also has two authors that are not listed as an author on the counterpart paper.

I cannot tell which was published first; they both came out at about the same time. I request that both journals investigate this possible case of duplicate publication / plagiarism.

On 2014 Jul 11, Mirko Spiroski commented:

Retraction

The article published by Ilankovic et al., 2013 [1] has been retracted by Editor-in-Chief because corresponding author published the similar paper in Psychiatria Danubina in 2014 [2]. An internal investigation has raised sufficient evidence of the originality in the first paper [1] and self plagiarism in the second paper [2]; as such, we retract this article from the literature on request by corresponding author and in accordance with guidelines and best editorial practices from the Committee on Publication Ethics. We apologize to our audience about this unfortunate situation.

References

[1] Ilankovic A, Damjanovic A, Ilankovic V, Milovanovic S, Petrovic D, Ilankovic N. Sleep Organisation in Depression and Schizophrenia: Index of Endogenous Periodicity of Sleep as a State Marker. Maced J Med Sci. 2013 Dec 15; 6(4):408-413.

[2] Ilanković A, Damjanović A, Ilanković V, Filipović B, Janković S, Ilanković N. Polysomnographic sleep patterns in depressive, schizophrenic and healthy subjects. Psychiatr Danub. 2014;26(1):20-6.

The retraction is located here: http://www.mjms.mk/Online/MJMS_2014_7_2/MJMS.1857-5773.2014-0380.pdf and here: http://www.degruyter.com/view/j/mjms.2014.7.issue-2/mjms.1857-5773.2014.0380/mjms.1857-5773.2014.0380.xml?format=INT

The retracted paper is located here: http://www.mjms.mk/Online/MJMS_2013_6_4/MJMS.1857-5773.2013-0335.pdf