{{Cite journal| doi = 10.1053/j.jrn.2014.04.005| issn = 1532-8503 (Electronic) 1051-2276 (Linking)| volume = 24| issue = 5| pages = 303–12| last1 = Guessous| first1 = I.| last2 = McClellan| first2 = W.| last3 = Kleinbaum| first3 = D.| last4 = Vaccarino| first4 = V.| last5 = Zoller| first5 = O.| last6 = Theler| first6 = J. M.| last7 = Paccaud| first7 = F.| last8 = Burnier| first8 = M.| last9 = Bochud| first9 = M.| last10 = Swiss Survey on Salt| first10 = Group| title = Comparisons of serum vitamin D levels, status, and determinants in populations with and without chronic kidney disease not requiring renal dialysis: a 24-hour urine collection population-based study| journal = J Ren Nutr| date = 2014-07-18| pmid = 25030223}}