MI: court OKs nurse's affidavit re nursing: medical expert's affidavit required for causation.
D005104:Expert Testimony / Q000331:legislation & jurisprudence*; D006801:Humans; D008318:Malpractice / Q000331:legislation & jurisprudence*; D008824:Michigan; D009741:Nursing Staff, Hospital / Q000331:legislation & jurisprudence*; D003668:Pressure Ulcer / Q000451:nursing