Updates are available Correction dated 2017-12-30

Article History

First Online: 26 October 2017

Change Date: 30 December 2017

Change Type: Correction

Change Details: Unfortunately, many errors were identified in the published article. The original article was corrected.

Compliance with Ethical Standards

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: Gianluca Trifirò coordinates a research team at the University of Messina, which receives research grants for projects that are not related to the topic of the paper. Simona Lucchesi, Ilaria Marcianò, Paolo Panagia, Rosanna Intelisano, Maria Pia Randazzo, Carmela Sgroi, Giuseppe Altavilla, Mariacarmela Santarpia, Vincenzo Adamo, Tindara Franchina, Francesco Ferraù, and Paolina Reitano declare that they have no conflicts of interest.

: This study was conducted in the context of the “Progetto Osservazionale sulla Psoriasi-SOPso”, and received unconditional funding from Novartis, which did not interfere in any stage of the study. The financial assistance was used to access and analyze data from different centers.

: All procedures performed in this study were in accordance with the Ethical Standards of the Institutional Research Committee of the Academic Hospital of Messina (minutes n.9/2014, 21 July 2014), according to the current national law (8), and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The manuscript does not contain clinical studies and all patients’ data were fully anonymized. For this type of study, formal consent is not required.