(October 22, 2018, 6:46 PM EDT) -- PHOENIX — A trial court correctly dismissed a patient’s suit for failing to present an expert affidavit because her allegations that a surgeon knowingly left a needle inside her body required a medical expert to explain the surgeon’s reasoning under the doctrine of res ipsa loquitur, an Arizona appeals court concluded Oct. 11 (Ernestine Grayson v. Banner Health, et al., No. 17-0577, Ariz. App., Div. 1, 2018 Ariz. App. Unpub. LEXIS 1466)....