![Annual average (thick line) and median (thin line) age of the patients... | Download Scientific Diagram Annual average (thick line) and median (thin line) age of the patients... | Download Scientific Diagram](https://www.researchgate.net/publication/330641005/figure/fig2/AS:726738409648129@1550279347578/Annual-average-thick-line-and-median-thin-line-age-of-the-patients-who-underwent.png)
Annual average (thick line) and median (thin line) age of the patients... | Download Scientific Diagram
![Elective surgery system strengthening: development, measurement, and validation of the surgical preparedness index across 1632 hospitals in 119 countries - The Lancet Elective surgery system strengthening: development, measurement, and validation of the surgical preparedness index across 1632 hospitals in 119 countries - The Lancet](https://www.thelancet.com/cms/asset/5512d4aa-3f81-40fa-923d-85d1bf4bb546/gr1.jpg)
Elective surgery system strengthening: development, measurement, and validation of the surgical preparedness index across 1632 hospitals in 119 countries - The Lancet
![of perioperative parameters of cholecystectomy for gallstone diseases... | Download Scientific Diagram of perioperative parameters of cholecystectomy for gallstone diseases... | Download Scientific Diagram](https://www.researchgate.net/publication/330641005/figure/tbl1/AS:726738409623554@1550279347992/of-perioperative-parameters-of-cholecystectomy-for-gallstone-diseases-between-patients.png)