Effect of constant magnetic field on methemoglobinemia erythrocytes Virjinia Doltchinkova, Siya Lozanova, Avgust Ivanov, Meglena Kitanova, Rumen Nikolov and Chavdar Roumenin Eur. Phys. J. Spec. Top., Publication ahead of print Published online: 08 July 2025 DOI: 10.1140/epjs/s11734-025-01753-2