A Symptom-Based Natural Language Processing Surveillance Pipeline for Post-COVID-19 Patients. - Greg M. Silverman; Geetanjali Rajamani; Nicholas E. Ingraham; James K. Glover; Himanshu S. Sahoo; Michael Usher; Rui Zhang 028; Farha Ikramuddin; Tanya E. Melnik; Genevieve B. Melton; Christopher J. Tignanelli (MedInfo, 2023)