Correction

A 10-Year Prospective Study of Primary Hyperparathyroidism with or without Parathyroid Surgery

N Engl J Med 2000; 342:144January 13, 2000

Article

A 10-Year Prospective Study of Primary Hyperparathyroidism with or without Parathyroid Surgery (Original Article, N Engl J Med 1999:341;1249 - 1255) . On page 1251, in Table 1, the units for urinary calcium should have been mg/day, not mg/g of creatinine, as printed. The first footnote to Tables 1 and 2, on page 1251, and Table 3, on page 1253, should have stated that the “Values are means ±SE,” not “means ±SD,” as printed; and “to convert values for urinary calcium to millimoles per day,” not “per liter,” as printed. Also, in Table 3, the values for serum parathyroid hormone after 5 and 10 years of follow-up should have been 113±14 and 106±8, respectively, not 113±67 and 106±26, as printed.