Table 1 Keywords for search of the databases

(("Coronavirus"[MeSH Terms] or "COVID-19" [MeSH Terms] or "Deltacoronavirus"[MeSH Terms] or "Deltacoronavirus"[MeSH Terms] or "Munia coronavirus HKU13"[TIAB] or "Middle East Respiratory Syndrome Coronavirus"[MeSH Terms] or "MERS-COV-2"[TIAB] or "MERS Virus"[TIAB] or "MERS Viruses"[tiab] or "Virus, MERS"[tiab] or "Viruses, MERS"[tiab] or "Coronavirus NL63, Human"[MeSH Terms] or "HCoV-NL63"[tiab] or "Human Coronavirus NL63"[tiab] or "Coronavirus NL63, Human"[tiab] or "Coronavirus Infections"[MeSH Terms] or "Coronavirus Infection*"[tiab] or "Coronavirus*"[tiab] or "SARS Virus"[MeSH Terms] or "Severe Acute Respiratory Syndrome Virus"[tiab] or "SARS-Related Coronavirus"[tiab] or "SARS-CoV"[tiab] or "SARS Coronavirus"[tiab] or "Coronavirus, SARS-Associated"[tiab] or "Alphacoronavirus"[MeSH Terms] or "Alphacoronavirus*"[tiab] or "Rhinolophus bat coronavirus HKU2"[tiab] or "Miniopterus bat coronavirus HKU8"[tiab] or "2019 novel coronavirus infection"[tiab] or "coronavirus disease 2019"[tiab] or "coronavirus disease-19"[tiab] or "2019-nCoV disease"[tiab] or "2019 novel coronavirus disease"[tiab] or "2019-nCoV infection"[tiab] or "Coronavirus 229E, Human"[tiab] or "HCoV-229E"[tiab] or "Human Coronavirus 229E"[tiab] or "Betacoronavirus"[tiab] or "Betacoronaviruses"[tiab] or "Pipistrellus bat coronavirus HKU5"[tiab] or "Human coronavirus HKU1"[tiab] or "HCoV-HKU1 "[tiab] or "Rousettus bat coronavirus HKU9"[tiab] or "Betacoronavirus1"[tiab] or "Human enteric coronavirus"[tiab] or "Human enteric coronaviruses"[tiab] or "Coronaviruses"[tiab] or "Deltacoronavirus*"[tiab] or "Coronavirus Infections"[tiab] or "Coronavirus Infection"[tiab] or "Infection, Coronavirus"[tiab] or "Infections, Coronavirus"[tiab] or "Middle East Respiratory Syndrome"[tiab] or "SARS Virus"[tiab] or "SARS Related Coronavirus"[tiab] or "Coronavirus, SARS"[tiab] or "Severe acute respiratory syndrome-related coronavirus"[tiab] or "Coronavirus, SARS-Associated"[tiab] or "SARS Associated Coronavirus"[tiab] or "Alphacoronavirus*"[tiab] or "COVID19"[tiab] or "2019 novel coronavirus infection"[tiab] or "2019 novel coronavirus disease"[tiab] or "Betacoronaviruses"[tiab] or "Betacoronavirus 1 "[tiab] or "Human enteric coronavirus*"[tiab]) AND ("Plants"[MeSH Terms] or "Plant Mucilage"[MeSH Terms] or "Plant Gums"[MeSH Terms] or "Plant Exudates"[MeSH Terms] or "Plant Lectins"[MeSH Terms] or "Plant Oils"[MeSH Terms] or "Plant Proteins"[MeSH Terms] or "Resins, Plant"[MeSH Terms] or "Plant Extracts"[MeSH Terms] or "Flowers"[MeSH Terms] or "Plants, Medicinal"[MeSH Terms] or "Plant*" [TIAB] or "Plant Mucilage"[tiab] or "Plant Gums"[tiab] or "Plant Exudates"[tiab] or "Plant Lectins"[tiab] or "Plant Oils"[tiab] or "Plant Proteins"[tiab] or "Resins, Plant"[tiab] or "Plant Extracts"[tiab] or "Flowers"[tiab] or "Plants, Medicinal"[tiab] or "Medicinal Plant"[tiab] or "Plant, Medicinal"[tiab] or "Pharmaceutical Plant*"[tiab] or "Plant, Pharmaceutical"[tiab] or "Plants, Pharmaceutical"[tiab] or "Healing Plants"[tiab] or "Healing Plant"[tiab] or "Plant, Healing"[tiab] or "Medicinal Herbs"[tiab] or "Herb, Medicinal"[tiab] or "Medicinal Herb"[tiab] or "Herbs, Medicinal"[tiab] or "herbal medicine"[tiab] or "Leave, Plant"[tiab] or "Plant Leave*"[tiab] or "Plant Leaf"[tiab] or "Leaf, Plant"[tiab]))