1. 1) Lever, W. F. & Schamburg-Lever, G.: Histopathology of the Skin, 5th. Ed., Philadelphia, Lippincott, 1975, p. 379.
2. 2) 田久保浩: 臨皮. 22: 865, 1968.
3. 3) 宮里 肇·他: 皮膚臨床. 15: 899, 1973.
4. 4) Orkin, M. et al.: Arch. Derm. 89: 640, 1964.
5. 5) Johnson, H. M. & Tilden, I. L.: Arch. Derm. 75: 405, 1957.