Novel Validated Five-point Photonumeric Scales for Assessment of Static and Dynamic Forehead Lines by Tingsong Lim, MD, Martina Kerscher, MD, Alexandra Ogilvie, MD, Tatjana Pavicic, MD, Paul Z. Lorenc, MD, Konstantin Frank, MD, Valentina Prinz, MBA, Mia Cajkovsky, Rainer Pooth, MD, PhD, Claudia Hernandez, MD

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