APA (7th ed.) Citation

(2020). Severe headache as the sole presenting symptom of COVID-19 pneumonia: A case report.

Chicago Style (17th ed.) Citation

Severe Headache as the Sole Presenting Symptom of COVID-19 Pneumonia: A Case Report. 2020.

MLA (8th ed.) Citation

Severe Headache as the Sole Presenting Symptom of COVID-19 Pneumonia: A Case Report. 2020.

Warning: These citations may not always be 100% accurate.