Letter to the Editor Implementing Extra Element Theorem Using Nullor Approach

Rhetoric in teaching: A Neglected element (letter to editor)

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Letter to Editor: Challenges of Implementing Disaster Preparedness Plan in Iran Hospitals

Social approach and effectiveness of the health system to cope with the Covid 19: Letter to the Editor

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Treatment of COVID-19 patients using plasma therapy: Letter to Editor

The symptoms of COVID-19, caused by the newly known type of coronavirus, vary widely from asymptomatic, mild to severe respiratory infection leading to hospitalization or death of patients. To date, no specific drug has been reported for the treatment of patients affected by this virus. One of the approaches adopted for the treatment of this disease is the use of plasma therapy, which contains ...

Letter to editor: the critical appraisal of “efficacy of licorice extract in the treatment of melasma: a randomized, double-blind, lacebo-controlled clinical trial”

This is a letter to editor criticizing the paper entitled “Efficacy of licorice extract in the treatment of melasma: A randomized, double-blind, placebo-controlled clinical trial”. We discuss some methodological points on external and internal validity of results. The paper suffers from lack of detailed information on sample size and power calculation to make sure generalisability of results to...