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Omitted from the title of the fourth original contribution published Aug 12 was the preposition "in." With "in" left in, or, more correctly, without the "in" left out, the title for the communication on pp 497-502 should read "Incidence of Primary Aldosteronism in Uncomplicated 'Essential' Hypertension."
"In" Left Out. JAMA. 1968;205(12):854. doi:10.1001/jama.1968.03140380058013