Microwave spectroscopy of the muonium 2S1/2−2P3/2 fine-structure intervalRemovePhilipp Blumer, Gianluca Janka, Svenja Geissmann, Iren Ignatov, Marcus Mähring, Zaher Salman, Andreas Suter, Edward Thorpe-Woods, Thomas Prokscha, Ben Ohayon, and Paolo Crivelli (Mu-MASS Collaboration)Phys. Rev. A 113, 012817 (2026)