On the other hand, Freud had no trouble publishing three papers on the subject in a matter of months. Doubt has been cast on the notion that the occurrence of child sexual abuse was not acknowledged by most of Freud's colleagues. It has been pointed out that they were skeptical about Freud's claims of one hundred percent confirmation of his theory, and would have been aware of criticisms that his suggestive clinical procedures were liable to produce findings of doubtful validity.