2.3. | Data extraction
Study selection and data extraction was performed by two independent
researchers (FM and MRA). Any disagreements about eligibility were
discussed with a third reviewer (SS-b). Data abstracted from the
eligible studies were (a) first author’s
name; (b) year of publication; (c)
study design; (d) intervention (type, dose and duration of
supplementation); (e) number of participants; (g) subjects’ information,
age, sex, and health status; and
(h) outcomes (ALT, AST) assessed,
before and after the intervention of serum
ALT,
AST.