1. Haake AR, Holbrook K. The structure and development of skin. In: Freedberg IM, Eisen AZ, Wolff K, Austen KF, Goldsmith LA, Katz S, Fitzpatrick TB, editors. Fitzpatrick′s Dermatology In General medicine. 5 th ed. New York: McGraw-Hill; 2003. p. 1-109.
2. Grevelink SV, Mulliken JB. Vascular anomalies. In: Freedberg IM, Eisen AZ, Wolff K, Austen KF, Goldsmith LA, Katz S, Fitzpatrick TB, editors. Fitzpatrick′s Dermatology In General medicine. 5 th ed. New York: McGraw-Hill; 2003. p. 1-35.
3. Braverman IM. The dermal microvascular unit: Relationship to immunological processes and dermal dendrocytes. In: Nickoloff BJ, editor. Dermal Immune System. Boca Raton: CRC Press; 1993. p. 91.
4. Bingham CO, Austen KF. The molecular and cellular biology of the mast cell. In: Freedberg IM, Eisen AZ, Wolff K, Austen KF, Goldsmith LA, Katz S, Fitzpatrick TB, editors. Fitzpatrick′s Dermatology In General medicine. 5 th ed. New York: McGraw-Hill; 2003. p. 1-33.