Authors are obliged to submit a declaration, stating that:
the paper has not been previously published with the exception of publication of practiceguidelines prepared by scientific societies and expert groups;
all the authors accepted the final version of the paper and agree to its publication;
there are no conflicts of interests, either financial or in relation to people and/ororganizations; otherwise all conflicts of interests must be stated with information on whomand in what way they concern;
the study and/or the paper’s preparation was not financed; otherwise any funding must bedetailed.
