757 P.2d 1374 SHERRI FITTRO, Petitioner, v. LINCOLN NATIONAL LIFE INSURANCE COMPANY, Respondent. No. 54623-1.The Supreme Court of Washington. En Banc. July 14, 1988. [1] Insurance — Group Insurance — Master Policy — Certificate of Insurance — Conflict. Under RCW 48.21.080, which requires group disability insurers to provide certificates of essential insurance features to insured […]