Evaluation of facial artery course variations and depth by Doppler ultrasonography.
Barış TenTaylan KaraTamer İrfan KayaMustafa Anıl YılmazGülhan TemelYüksel BalcıÜmit TürsenKaan EsenPublished in: Journal of cosmetic dermatology (2020)
This study suggests that there is no absolutely safe depth or region for nasolabial fold filler injections.