Validation of a Thai artificial chatmate designed for cheering up the elderly during the COVID-19 pandemic. - Somrudee Deepaisarn; Ek-uma Imkome; Konlakorn Wongpatikaseree; Sumeth Yuenyong; Ploi Lakanavisid; Rangsiman Soonthornchaiva; Panida Yomaboot; Angkoon Angkoonsawaengsuk; Napawan Munpansa (F1000Research, 2022)