Cetthakrikul, N., B. Ngamvirojcharoen, N. Manaboriboon, S. Wongsuwanphon, and R. Suphanchaimat. “Obstetric Service Utilization in Public Health Facilities during COVID-19 Pandemic among Cross-border Migrants in Thailand, 2019–2022”. Outbreak, Surveillance, Investigation & Response (OSIR) Journal, vol. 18, no. 2, June 2025, pp. 106-15, doi:10.59096/osir.v18i2.273673.