Mitsumasa Umesawa1,2, Kazumasa Yamagishi2, Hiroyuki Noda3, Ai Ikeda4, Shinobu Sawachi2,5, Isao Muraki6, Choy-Lye Chei2, Renzhe Cui3, Masanori Nagao1, Tetsuya Ohira3, Tomoko Sankai7, Takeshi Tanigawa4, Akihiko Kitamura3, Masahiko Kiyama6, Hiroyasu Iso8. 1. Department of Public Health, Dokkyo Medical University, School of Medicine, 880 Kita-kobayashi, Mibu, Shimotsuga-gun, Tochigi, 321-0293, Japan. 2. Department of Public Health Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8575, Japan. 3. Public Health, Department of Social Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan. 4. Department of Public Health, Graduate School of Medicine, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan. 5. Biogen Japan Ltd., 14th floor 1-4-1 Nihonbashi, Chuo-ku, Tokyo, 103-0027, Japan. 6. Osaka Center for Cancer and Cardiovascular Diseases Prevention, 1-3-2 Nakamichi, Higashinari-ku, Osaka, 537-0025, Japan. 7. Department of Community Health, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8575, Japan. 8. Public Health, Department of Social Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan. iso@pbhel.med.osaka-u.ac.jp.
Unfortunately, the original version of this article [1] contained an error.We would like to correct a formula in “Validation study” section in page 3.We wrote that “sodium excretion (g/day) = 0.032 x sodium concentration (mmol/l) -2.278 (women) + 9.130”, however, we would like to replace this with “NaCl excretion (g/day) = 0.032 x sodium concentration (mmol/l) -2.278 (women) + 9.130”.