High-scale validity of a two-Higgs-doublet scenario: metastability included Nabarun Chakrabarty and Biswarup Mukhopadhyaya Eur. Phys. J. C, 77 3 (2017) 153 Published online: 10 March 2017 DOI: 10.1140/epjc/s10052-017-4705-0