Comment on

• Hospital volume and surgical mortality in the United States.

  Birkmeyer JD, Siewers AE, Finlayson EV, Stukel TA, Lucas FL, Batista I, Welch HG, Wennberg DE. Birkmeyer JD, et al. N Engl J Med. 2002 Apr 11;346(15):1128-37. doi: 10.1056/NEJMsa012337. N Engl J Med. 2002. PMID: 11948273
• Variations in morbidity after radical prostatectomy.

  Begg CB, Riedel ER, Bach PB, Kattan MW, Schrag D, Warren JL, Scardino PT. Begg CB, et al. N Engl J Med. 2002 Apr 11;346(15):1138-44. doi: 10.1056/NEJMsa011788. N Engl J Med. 2002. PMID: 11948274