Updates are available Correction dated 2019-06-20

Article History

Received: 13 April 2019

Accepted: 21 May 2019

First Online: 25 May 2019

Change Date: 20 June 2019

Change Type: Correction

Change Details: In the Original Publication, the e-mail address of the author Milan Petronijević is incorrect. The correct e-mail address is milanpetronijevic@yahoo.com.

Compliance with ethical standards

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: Eugene J. Kucharz reports royalties for lecturing and expert fee from the following companies: AbbVie, Berlin Chemie, Biogen, Celgene, Egis, Eli Lilly Polska, MSD, Novartis, Pfizer, Polpharma, Roche, Sandoz, UCB Biopharma, outside the submitted work. S. Szanto reports personal fees from Roche, personal fees from MSD, personal fees and non-financial support from Abbvie, grants and personal fees from Pfizer, personal fees from Novartis, personal fees from KRKA, personal fees from Sager Pharma, personal fees and non-financial support from Mylan, outside of the submitted work; O. Bruyère reports grants from Biophytis, IBSA, MEDA, Servier, SMB, and Theramex, outside the submitted work. C. Cooper has received lecture fees and honoraria from Amgen, Danone, Eli Lilly, GSK, Kyowa Kirin, Medtronic, Merck, Nestlé, Novartis, Pfizer, Roche, Servier, Shire, Takeda and UCB outside of the submitted work. J-Y. Reginster reports grants from ELI LILLY, grants and personal fees from SERVIER, grants and personal fees from MEDA, grants and personal fees from CNIEL, grants and personal fees from IBSA GENEVRIER, personal fees from RADIUS HEALTH, grants and personal fees from PIERRE FABRE, personal fees from DAIRY RESEARCH COUNCIL, outside of the submitted work. J. Konstantynowicz reports non-financial support from Takeda/Shire and Mylan (travel and conference fee), outside of the submitted work. M. Ivanova Goycheva reports payment for lectures from Abbvie, Pfizer, Novartis, UCB, Mylan, Amgen, outside of the submitted work. Z. Kamenov reports lecturing fees, personal fees, and expert fees from Boehringer, Astra Zeneca, Mundipharma, NovoNordisk, Sanofi, Eli Lilly, Berlin Chemie, MSD, Novartis, Sandoz, Merck, MEDA, Mylan, Servier, outside the submitted work. M. Petronijevic reports non-financial support from Takeda/Shire, and non-financial support from Mylan, outside of the submitted work. R. Stoilov reports payment for lectures from Pfizer, Abbvie, UCB, MSD, Novartis, Mylan, Amgen, outside of the submitted work. M. Domzalski, G. Radunovic, R. Vrana, R. Stok, K. Simnovec, B. Steno, and L. Gallelli declare that they have no conflicts of interest.

: All authors meet the ICMJE criteria for authorship for this manuscript, take responsibility for the integrity of the work as a whole, and have given final approval to the version to be published.