Panfan Wongkittithaworn และ Thitima Suntharasaj; Jarurin Pitanupong. (2024) Knowledge, Attitudes, Practices and Mental Health Impact of COVID-19 to Pregnant Women in 2020 to 2021. <i>Thai Journal of Obstetrics and Gynaecology</i>, <i>32</i>(2), 115-127.Panfan Wongkittithaworn และ Thitima Suntharasaj; Jarurin Pitanupong. "Knowledge, Attitudes, Practices and Mental Health Impact of COVID-19 to Pregnant Women in 2020 to 2021". Thai Journal of Obstetrics and Gynaecology 32 (2024):115-127.Panfan Wongkittithaworn และ Thitima Suntharasaj; Jarurin Pitanupong. Knowledge, Attitudes, Practices and Mental Health Impact of COVID-19 to Pregnant Women in 2020 to 2021. PIMDEE Co. Ltd.:ม.ป.ท. 2024.