TY - JOUR AU - Chen, Y F; Armoiry, X; Higenbottam, C TI - Magnitude and modifiers of the weekend effect in hospital admissions: a systematic review and meta-analysis JO - BMJ Open IS - 06 VL - 9 PY - 2019 DO - 10.1136/bmjopen-2018-025764 L3 - PubMed-ID: 31164363 SP - e025764 ER -