Four of the five mothers , as well as a young sister of one patient , were carriers of the mutation present in the affected child .
four of the five mothers , as well as a young sister of one patient , were carriers of the mutation present in the affected child .
O O O O B-multi_cell O O O O O B-multi_cell I-multi_cell O O B-multi_cell O O O O O B-other_name O O O B-multi_cell I-multi_cell O