0 works0 citations0 h-indexGoogle ScholarOpenAlexShi T. OngNational University Hospital(SG)Research AreasMigraine and Headache Studies, Long-Term Effects of COVID-19, Retinal and Optic ConditionsMost-Cited Works→ Headaches Associated With Personal Protective Equipment – A Cross‐Sectional Study Among Frontline Healthcare Workers During COVID‐19(2020)465 cited