Type 4 Waardenburg syndrome (also called Waardenburg-Shah syndrome) is characterized by symptoms of Hirschsprung's disease in addition to the classic features of hearing loss and pigmentation abnormalities.
[Effects of a vitamin B complex on functional recovery after nerve injury (author's transl)]. Hasegawa K, Mikuni N, Sakai Y. Functional recovery after nerve crushing was investigated in the following manner: Under pentobarbital anesthesia the sciatic nerve of the rat was crushed at the level of the hip (proximal crush) or the thigh (distal crush).
The vitamin B complex is a term used to refer to the inclusion of all eight major B-vitamins in any given supplement. The vitamins are numbered and includes vitamin B1 (thiamine), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6 (pyridoxine), vitamin B7 (biotin), vitamin B9 (folic acid) and vitamin B12.