MEDLINE search strategy
| 1 | Hospitalization/ |
| 2 | Patient admission/ |
| 3 | Patient readmission/ |
| 4 | (admission? or admitted or readmission? or re-admission? or readmitted or re-admitted or hospitali* or rehospitali* or re-hospitali*).ti,ab. |
| 5 | 1 or 2 or 3 or 4 |
| 6 | Cochrane database of systematic reviews.jn. or search.tw. or meta-analysis.pt. or Medline.tw. or systematic review.tw. |
| 7 | 5 and 6 |