The Fried Frailty Criteria as Inclusion Criteria for a Randomized Controlled Trial: Personal Experience and Literature Review (2011) Drey M, Pfeifer K, Sieber C, Bauer J Journal article The frailty criteria by Fried as inclusion criteria for a randomised controlled trial: personal experience and literature review (2011) Drey M, Pfeifer K, Sieber C, Bauer J Journal article, Review article Procalcitonin: Inflammatory Biomarker for Assessing the Severity of Community-Acquired Pneumonia - A Clinical Observation in Geriatric Patients (2010) Bertsch T, Alber B, Esslinger AS, Dragonas C, Bauer JM, Sieber C, Heppner HJ Journal article Prevalence of Percutaneous Endoscopic Gastrostomy in Nursing Home Residents - A Nationwide Survey in Germany (2010) Wirth R, Bauer J, Willschrei HP, Volkert D, Sieber C Journal article Aging well together - A mini-review (2009) Rohr M, Lang F Journal article, Review article Preventing falls in physically active community-dwelling older people: a comparison of two intervention techniques (2007) Freiberger E, Menz HB, Abu-Omar K, Rütten A Journal article