PT  - JOURNAL ARTICLE
AU  - Leonard H. Sigal
TI  - What is causing the ‘long-hauler’ phenomenon after COVID-19?
AID  - 10.3949/ccjm.88a.21009
DP  - 2021 May 01
TA  - Cleveland Clinic Journal of Medicine
PG  - 273--278
VI  - 88
IP  - 5
4099  - http://www.ccjm.org/content/88/5/273.short
4100  - http://www.ccjm.org/content/88/5/273.full
SO  - Cleve Clin J Med2021 May 01; 88