Adolescent specialist Dr Michael Cohen , who worked on the study , said doctors had treated eight-year-old children with anorexia - and that he had once treated a four-year-old boy .

Adolescent specialist Dr. Michael Cohen , who worked on the study , said doctors had treated 8-year-old children with anorexia _ and that he had once treated a 4-year-old boy .

Please tell me if the sentences above mean the same.
Select from:
a). no.
b). yes.
b).