Original sentence: A number of advocacy groups, such as Advocates for Children in Therapy and Quackwatch, have outlined what they believe to be a set of unvalidated treatments that are used within attachment therapy or by attachment therapists.The term has no common or generally accepted meaning in the professional community so its actual definition is unclear
Edited sentence: A number of advocacy groups, such as Advocates for Children in Therapy and Quackwatch, have undertaken to label a large number of treatments for children with disorders of attachment as Attachment Therapy in an attempt to discredit those therapies.However, because the term has no common or generally accepted meaning in the professional community its actual definition is unclear