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Vinayahalingam, Nithursa; McDougall, Jane; Ahrens, Olaf; Ebneter, Andreas (2022). Retrospective validation of the postnatal Growth and Retinopathy of Prematurity (G-ROP) criteria in a Swiss cohort. BMC ophthalmology, 22(1), p. 19. BioMed Central 10.1186/s12886-021-02227-4
Schlapbach, Luregn J; Ahrens, Olaf; Klimek, Peter; Berger, Steffen; Kessler, Ulf (2010). Clostridium perfringens and necrotizing enterocolitis. Journal of pediatrics, 157(1), p. 175. New York, N.Y.: Elsevier 10.1016/j.jpeds.2010.03.027
