%0 Journal Article %T Efficacy of Preoperative Administration of Acetaminophen and Melatonin on Retrobulbar Block Associated Pain in Cataract Surgery: A Letter to Editor %A Reza Aminnejad %J Archive of "Anesthesiology and Pain Medicine". %D 2019 %R 10.5812/aapm.84957 %X Dear Editor %K Acetaminophen %K Melatonin %K Retrobulbar Block %K Pain %K Cataract %K Surgery %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6412315/