Researchers argue that providers should incorporate tobacco use assessment into everyday clinical practice, as well as continuing assessments of cardiovascular health through measures such as blood pressure and diagnostics such as electrocardiography. Additionally there are ethical and practical concerns if healthcare facilities prohibit smoking without providing alternatives, particularly since withdrawal can alter the presentation of symptoms and response to treatment and may confuse or even exacerbate symptoms. Clinicians should also be aware of the consequences that can result from a lack of cigarettes, such as aggression, prostitution, trafficking, and general disruption.