Effect of outpatient physician involvement on the physician orders for life-sustaining treatment completed by hospitalists: a cross-sectional study - Lee, Jongchan; Ohn, Jung Hun; Kim, Nak-Hyun; Lim, Yejee; Kim, Hye Won; Park, Hee-Sun; Cho, Jae Ho; Kim, Sun-Wook; Ryu, Jiwon; Jang, Hak Chul; Kim, Eun Sun (Annals of Palliative Medicine, 2022)