25. Tyser, A. R., Abtahi, A. M., McFadden, M., & Presson, A. P. (2016). Evidence of nonresponse bias in the Press-Ganey patient satisfaction survey. BMC health services research, 16, 1-6. https://doi.org/10.1186/s12913-016-1595-z
26. Fazzalari, A., Pozzi, N., Alfego, D., Shi, Q., Erskine, N., Tourony, G., ... & Cahan, M. A.
(2020). Treatment of acute cholecystitis: do medicaid and non-medicaid enrolled patients receive the same care?. Journal of Gastrointestinal Surgery, 24(4), 939-948. https://doi .org/10.1007/s11605-019-04471-y
27. Scott, A., Shekherdimian, S., Rouch, J. D., Sacks, G. D., Dawes, A. J., Lui, W. Y., ... & Aboulian, A. (2017). Same-day discharge in laparoscopic acute non-perforated appendectomy. Journal of the American College of Surgeons, 224(1), 43-48. https://doi.org/10.1016/jjamcollsurg.2016.10.026