| Determinants and outcomes of physical activity in patients with COPD: a systematic review E Gimeno-Santos, A Frei, C Steurer-Stey, J De Batlle, RA Rabinovich, ... Thorax 69 (8), 731-739, 2014 | 497 | 2014 |
| Smoking cessation induces profound changes in the composition of the intestinal microbiota in humans L Biedermann, J Zeitz, J Mwinyi, E Sutter-Minder, A Rehman, SJ Ott, ... PloS one 8 (3), e59260, 2013 | 492 | 2013 |
| Antibiotics for exacerbations of chronic obstructive pulmonary disease DJ Vollenweider, A Frei, CA Steurer‐Stey, J Garcia‐Aymerich, MA Puhan Cochrane Database of Systematic Reviews, 2018 | 481 | 2018 |
| Physical activity is increased by a 12-week semiautomated telecoaching programme in patients with COPD: a multicentre randomised controlled trial H Demeyer, Z Louvaris, A Frei, RA Rabinovich, C de Jong, ... Thorax 72 (5), 415-423, 2017 | 282 | 2017 |
| A multicentre validation of the 1-min sit-to-stand test in patients with COPD S Crook, G Büsching, K Schultz, N Lehbert, D Jelusic, S Keusch, ... European Respiratory Journal 49 (3), 2017 | 233 | 2017 |
| Self-efficacy instruments for patients with chronic diseases suffer from methodological limitations-a systematic review A Frei, A Svarin, C Steurer-Stey, MA Puhan Health and quality of life outcomes 7, 1-10, 2009 | 155 | 2009 |
| Recovery and symptom trajectories up to two years after SARS-CoV-2 infection: population based, longitudinal cohort study T Ballouz, D Menges, A Anagnostopoulos, A Domenghino, HE Aschmann, ... Bmj 381, 2023 | 134 | 2023 |
| Drivers of acceptance of COVID-19 proximity tracing apps in Switzerland: panel survey analysis V von Wyl, M Höglinger, C Sieber, M Kaufmann, A Moser, M Serra-Burriel, ... JMIR public health and surveillance 7 (1), e25701, 2021 | 112 | 2021 |
| Five comorbidities reflected the health status in patients with chronic obstructive pulmonary disease: the newly developed COMCOLD index A Frei, P Muggensturm, N Putcha, L Siebeling, M Zoller, CM Boyd, ... Journal of clinical epidemiology 67 (8), 904-911, 2014 | 110 | 2014 |
| Corona Immunitas: study protocol of a nationwide program of SARS-CoV-2 seroprevalence and seroepidemiologic studies in Switzerland EA West, D Anker, R Amati, A Richard, A Wisniak, A Butty, E Albanese, ... International journal of public health 65, 1529-1548, 2020 | 96 | 2020 |
| Minimum important difference of the Epworth Sleepiness Scale in obstructive sleep apnoea: estimation from three randomised controlled trials S Crook, NA Sievi, KE Bloch, JR Stradling, A Frei, MA Puhan, M Kohler Thorax 74 (4), 390-396, 2019 | 91 | 2019 |
| The PROactive innovative conceptual framework on physical activity F Dobbels, C de Jong, E Drost, J Elberse, C Feridou, L Jacobs, ... European Respiratory Journal 44 (5), 1223-1233, 2014 | 88 | 2014 |
| A mixed-method study to explore patients' perspective of self-management tasks in the early phase after kidney transplant G Schmid-Mohler, P Schäfer-Keller, A Frei, T Fehr, R Spirig Progress in Transplantation 24 (1), 8-18, 2014 | 82 | 2014 |
| Patient-reported physical activity questionnaires: a systematic review of content and format K Williams, A Frei, A Vetsch, F Dobbels, MA Puhan, K Rüdell Health and quality of life outcomes 10, 1-18, 2012 | 80 | 2012 |
| Objectively measured physical activity in patients with COPD: recommendations from an international task force on physical activity H Demeyer, D Mohan, C Burtin, AW Vaes, M Heasley, RP Bowler, ... Chronic Obstructive Pulmonary Diseases: Journal of the COPD Foundation 8 (4 …, 2021 | 78 | 2021 |
| No association of 25-hydroxyvitamin D with exacerbations in primary care patients with COPD MA Puhan, L Siebeling, A Frei, M Zoller, H Bischoff-Ferrari, G Ter Riet Chest 145 (1), 37-43, 2014 | 76 | 2014 |
| Smartphone-based physical activity telecoaching in chronic obstructive pulmonary disease: mixed-methods study on patient experiences and lessons for implementation M Loeckx, RA Rabinovich, H Demeyer, Z Louvaris, R Tanner, N Rubio, ... JMIR mHealth and uHealth 6 (12), e9774, 2018 | 72 | 2018 |
| Validity of instruments to measure physical activity may be questionable due to a lack of conceptual frameworks: a systematic review E Gimeno-Santos, A Frei, F Dobbels, K Rüdell, MA Puhan, ... Health and Quality of life Outcomes 9, 1-13, 2011 | 68 | 2011 |
| Walking on common ground: a cross-disciplinary scoping review on the clinical utility of digital mobility outcomes A Polhemus, L Delgado-Ortiz, G Brittain, N Chynkiamis, F Salis, H Gaßner, ... NPJ digital medicine 4 (1), 149, 2021 | 66 | 2021 |
| Electronic nicotine-delivery systems for smoking cessation R Auer, A Schoeni, JP Humair, I Jacot-Sadowski, I Berlin, MJ Stuber, ... New England Journal of Medicine 390 (7), 601-610, 2024 | 64 | 2024 |
