|Androgenetic alopecia (AGA) is considered to be an alteration of hair growth and/or a premature aging of the pilosebaceous unit with a multifactorial and even polygenic etiology. Genetically determined, androgen induced age-dependent progressive hair loss with sex-dependent differences in incidence, pattern and severity.
A journal is a periodical publication intended to further progress of science, usually by reporting new research. Most journals are highly specialized, although some of the oldest journals publish articles, reviews, editorials, short communications, letters, and scientific papers across a wide range of scientific fields. Journals contain articles that peer reviewed, in an attempt to ensure that articles meet the journal's standards of quality, and scientific validity. Each such journal article becomes part of the permanent scientific record.