Betkerur, U NChhaya, V HShah, H S1970-10-012009-05-271970-10-012009-05-271970-10-01Betkerur UN, Chhaya VH, Shah HS. Myotonic syndromes. Indian Pediatrics. 1970 Oct; 7(10): 579-85http://imsear.searo.who.int/handle/123456789/11361engAdolescentChildHumansJournal Article