what's the estimated deaths with operational period of 17 march 1942 – end of june 1943
CREATE TABLE "table1_10335_1" (
  "camp" text,
  "estimated_deaths" text,
  "operational" text,
  "occupied_territory" text,
  "current_country_of_location" text,
  "primary_means_for_mass_killings" text
);
SELECT "estimated_deaths" FROM "table1_10335_1" WHERE "operational"='17 March 1942 – end of June 1943';