M
Marcel Zwahlen
Researcher at University of Bern
Publications - 380
Citations - 36509
Marcel Zwahlen is an academic researcher from University of Bern. The author has contributed to research in topics: Population & Cohort study. The author has an hindex of 82, co-authored 357 publications receiving 32252 citations. Previous affiliations of Marcel Zwahlen include University of Düsseldorf & University of Basel.
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Journal ArticleDOI
Body-mass index and incidence of cancer: a systematic review and meta-analysis of prospective observational studies
Andrew G Renehan,Margaret Tyson,Matthias Egger,Matthias Egger,Richard F Heller,Marcel Zwahlen +5 more
TL;DR: Assessment of the strength of associations between BMI and different sites of cancer and differences in these associations between sex and ethnic groups should inform the exploration of biological mechanisms that link obesity with cancer.
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Insulin-like growth factor (IGF)-I, IGF binding protein-3, and cancer risk: systematic review and meta-regression analysis
Andrew G Renehan,Marcel Zwahlen,Christoph E. Minder,Sarah T O'Dwyer,Stephen M Shalet,Matthias Egger,Matthias Egger +6 more
TL;DR: Circulating concentrations of IGF-I and IGFBP-3 are associated with an increased risk of common cancers, but associations are modest and vary between sites.
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Outcomes associated with drug-eluting and bare-metal stents: a collaborative network meta-analysis
Christoph Stettler,Christoph Stettler,Simon Wandel,Sabin Allemann,Adnan Kastrati,Marie Claude Morice,Albert Schömig,Matthias Pfisterer,Gregg W. Stone,Martin B. Leon,José Suárez de Lezo,Jean-Jacques Goy,Seung-Jung Park,Manel Sabaté,Maarten J. Suttorp,Henning Kelbæk,Christian Spaulding,Maurizio Menichelli,Paul Vermeersch,Maurits T. Dirksen,Pavel Cervinka,Anna Sonia Petronio,Alain J Nordmann,Peter Diem,Bernhard Meier,Marcel Zwahlen,Stephan Reichenbach,Sven Trelle,Stephan Windecker,Peter Jüni,Peter Jüni +30 more
TL;DR: A network meta-analysis with a mixed-treatment comparison method to combine direct within-trial comparisons between stents with indirect evidence from other trials while maintaining randomisation found sirolimus-eluting stents seem to be clinically better than bare-metal and paclitaxel-eluted stents.
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Sexual transmission of HIV according to viral load and antiretroviral therapy: systematic review and meta-analysis
TL;DR: Studies of heterosexual discordant couples observed no transmission in patients treated with ART and with viral load below 400 copies/ml, but data were compatible with one transmission per 79 person-years, which is needed to better define the risk of HIV transmission from patients on ART.
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A systematic review of the 5-year survival and complication rates of implant-supported single crowns
Ronald E. Jung,Bjarni E. Pjetursson,Roland Glauser,Anja Zembic,Marcel Zwahlen,Niklaus P. Lang +5 more
TL;DR: It can be concluded that after an observation period of 5 years, high survival rates for implants and implant-supported SCs can be expected, however, biological and particularly technical complications are frequent.