Khan A, Ashrafpour H, Huang N, Neligan PC, Kontos C, Zhong A, Forrest CR, Pang CY. Acute local subcutaneous VEGF165 injection for augmentation of skin flap viability: efficacy and mechanism. American Journal of Physiology-Regulatory, Integrative and Comparative Physiology. 2004 Nov;287(5):R1219–29. doi: 10.1152/ajpregu.00143.2004.