Emergency department-initiated palliative care screening among older adults: a systematic review and meta-analysis protocol.

Lin DE, Gunaga S, Mowbray FI, Isaacs ED, Markwalter D, George N, Hay AE, Manfredi R, Westlake E, Akhter M, Bowman JK, Rebollo-Lee N, Gacioch B, Ginsburg AD, Brooten JK, Pajka S, Selman K, Bain P, Davis JJ, Liu S, Ouchi K