Case number	Age	Injection method	Pain level on treatment	Patient satisfaction		Side effect
Case number	Age	Injection method	Pain level on treatment	Immediately after treatment	4-month with phone interview	Side effect
Case 1	40	27G Sharp Needle	No pain	Very satisfied	Very satisfied	Mild tenderness
Case 2	41	27G Sharp Needle	Acceptable	Very satisfied	Very satisfied	Mild tenderness
Case 3	50	27G Micro-Cannula	Acceptable	Very satisfied	Very satisfied	Nil
Case 4	28	27G Micro-Cannula	Acceptable	Very satisfied	Very satisfied	Nil
Case 5	39	27G Sharp Needle	Mild pain	Satisfied	Satisfied	Nil
Case 6	46	27G Sharp Needle	No pain	Very satisfied	Very satisfied	Mild tenderness
Case 7	44	27G Sharp Needle	No pain	Very satisfied	Very satisfied	Intermittent tingling sensation lasted for 3 days
Case 8	38	27G Micro-Cannula	No pain	Very satisfied	Very satisfied	Mild edema
Case 9	29	27G Sharp Needle	Acceptable	Satisfied	Satisfied	Nil
Case 10	40	27G Micro-Cannula	Acceptable	Very satisfied	Very satisfied	Nil
Average age	39.5
Standard deviation	6.835365551