 - Referral to one of the participating specialist adult outpatient eating disorder clinics with a primary DSM-5 diagnosis of Anorexia Nervosa or OSFED Other Specified Feeding or Eating Disorder with a body mass index BMI; kgm2 of 18.5 or below. OSFED will be defined as having features of Anorexia but missing at least two of the four diagnostic criteria. 