Result(21) COVID‐19(21) objective(21) COVID‐19(15) COVID(12) material(12) expression(10) lesion(9) enzyme(9) examined(9) Patient(9) angiotensin(9) tongue(9) risk(7) reported(7) age(7) profile(6) ACE2(6) questionnaire(6) expression levels(6) National(6) relative susceptibility(6) SARS‐CoV‐2(6) Proteases(6) HPA(6) neck cancer(6) except for(6) tissues(6) Dental care(6) Effect(6)