Address correspondence to:
Dr. Mihail Boyanov
Clinic of Endocrinology and Metabolism
University Hospital Alexandrovska, 1, G. Sofiyski str.
Phone: +3592 9230 784
Fax: +3592 9230 779
Mihail A. Boyanov – Substantial contributions to conception and design, Acquisition of data, Analysis and interpretation of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Guarantor of submission
The corresponding author is the guarantor of submission.
Source of support
Conflict of interest
Authors declare no conflict of interest.