TG and thyroid cancer: Secondly, some candidate behavioral (such as smoking habit and non-abusive alcohol consumption) and psychosocial (such as stress) risk factors of developing gastrointestinal disorders, family history, body mass index, ATA risk stratification results, thyroid cancer staging, as well as the laboratory parameters (such as thyroglobulin levels in addition to the above mentioned TSH, T3 and T4) are not readily available from the NHIRD database.