Laroche R, Sirol J, Durand G, Burrel P, Lunven Y, Piriou A, Peyron J P
Med Trop (Mars). 1978 Sep-Oct;38(5):555-8.
These two deformities are rare and the 8 reported cases give evidence of the cosmopolitan feature of these malformations (Madagascar, Ivory Coast, Central African Empire, Djibouti).