Myotonia congenita in dizygotic twins.
D002648:Child; D004200:Diseases in Twins; D006801:Humans; D008297:Male; D009224:Myotonia Congenita / Q000150:complications / Q000175:diagnosis / Q000201:enzymology / Q000235:genetics*; D010375:Pedigree; D016135:Spinal Dysraphism / Q000150:complications