1. Persaud TVN. Problems of birth defects. From Hippocrates to thalidomide and after. In: Persaud TVN part I belief, mythology, magic and superstition. Commentary. Baltimore: University Park Press Maryland Publishers; 1977. p. 3–4.
2. Belov S. Classification, terminology, and nosology of congenital vascular defects. In: Belov S, Loose DA, Weber J, editors. Vascular malformations. Reinbek: Einhorn-Presse; 1989. p. 25–30.
3. Kennedy WP. Epidemiologic aspects of the problem of congenital malformations. In: Persaud TNV problems of birth defects. Baltimore: Publisher University Park Press; 1977. p. 35–52.
4. International society for the study of vascular anomalies. Approved at the General Assembly, Amsterdam, 2018. https://www.issva.org/UserFiles/file/ISSVA-Classification-2018.pdf.
5. Mulliken JB, Glowacki J. Hemangiomas and vascular malformations in infants and children: a classification based on endothelial characteristics. Plast Reconstr Surg. 1982;69(3):412–22.