Where were the nurses?
D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects / Q000451:nursing; D002423:Cause of Death; D005104:Expert Testimony / Q000331:legislation & jurisprudence*; D005260:Female; D006323:Heart Arrest / Q000209:etiology; D006801:Humans; D007196:Indiana; D008318:Malpractice / Q000331:legislation & jurisprudence*; D009730:Nursing Assessment / Q000331:legislation & jurisprudence; D009741:Nursing Staff, Hospital / Q000331:legislation & jurisprudence*; D011182:Postoperative Care / Q000331:legislation & jurisprudence / Q000451:nursing