Dear authors, From February 1st, 2020, before submit an article, please, note that a valid ORCID number (with data open to public) of all authors must me mentioned in the COVER LETTER and in the METADATA. The absence of this information may impair the sequence of the editorial process. This is need to avoid fake submissions. Thanks for your comprehension. IJHDR Editorial Team Read More Read more about ORCID NUMBER IS NOW MANDATORY