The other ones became “adverse effects” (2014–2016, intensity 53.55), a second strong keyword; recent studies have given particular attention to keywords, including “human tissue” (2021–2024), “eosinophilic esophagits” (2021–2024), “pediatric patient” (2021–2024), ” coronavirus disease 2019” (2021–2024), “gastroesophageal reflux” (2021–2024), “clinical outcome” (2021–2024), “human cell” (2021–2024), “interleukin 13” (2021–2024), “meta-analysis” (2022–2024) “physical examination” (2022–2024) “examination” (2022–2024). The gene discussed is IL13; the disease is gastroesophageal reflux disease.