Natus Medical Sees Q3 Adj. EPS $0.32-$0.39 vs $0.40 Est., Sales $122M-$126M vs $125.35M Est.; Narrows FY19 Adj. EPS Guidance From $1.17-$1.44 To $1.19-$1.32 vs $1.27 Est., Narrows Sales Guidance From $489M-$505M To $492M-$500M vs $495.95M Est.