A double-blinded, vehicle-controlled study evaluating masoprocol cream in the treatment of actinic keratoses on the head und neck. - Olsen,E.A.; Abernethy,M.L.; Kulp-Shorten,C.; Callen,J.P.; Glazer,S.D.; Huntley,A.; McCray,M.; Monroe,A.B.; Tschen,E.; Wolf,J.E, Jr. (J Am Acad Dermatol, 1991)