[1] Univ Auckland, Fac Med & Hlth Sci, Auckland, New Zealand
[2] Auckland Univ Technol, Hlth & Rehabil Res Inst, Auckland, New Zealand
[3] Newcastle Univ, Inst Ageing, Clin Ageing Res Unit, Inst Neurosci, Campus Ageing & Vital, Newcastle Upon Tyne, Tyne & Wear, England
[4] Newcastle Upon Tyne Hosp NHS Fdn Trust, Newcastle Upon Tyne, Tyne & Wear, England
[5] Ulm Univ, Inst Epidemiol & Med Biometry Ulm, Ulm, Germany
[6] Robert Bosch Krankenhaus, Dept Geriatr & Geriatr Rehabil, Stuttgart, Germany
[7] IB Univ Appl Sci Berlin, Study Ctr Stuttgart, Stuttgart, Germany