1 Subjects: “...acidity...”

2 Subjects: “...hyaluronic acid (HA)...”

3 Subjects: “...hyaluronic acid (HA)...”

4 Subjects: “...hydroxyphenylacetic acid...”

5 Subjects: “...anthranilic acid...”

6 Subjects: “...hydroxycinnamic acid...”

7 Subjects: “...organic acid dissolution...”

8 Subjects: “...amino acids...”

9 Subjects: “...valproic acid...”

10 Subjects: “...lactic acid...”

11 Subjects: “...betulinic acid...”

12 Subjects: “...betulinic acid...”

13 Subjects: “...uric acid...”