Palmer SC,Ruospo M,Campbell KL,Garcia Larsen V,Saglimbene V,Natale P,Gargano L,Craig JC,Johnson DW,Tonelli M,Knight J,Bednarek-Skublewska A,Celia E,Del Castillo D,Dulawa J,Ecder T,Fabricius E,Frazão JM,Gelfman R,Hoischen SH,Schön S,Stroumza P,Timofte D,Török M,Hegbrant J,Wollheim C,Frantzen L,Strippoli GF,DIET-HD Study investigators