Declaration on the use of social media for rheumatology professionals - Francis Berenbaum; Loreto Carmona; Christopher J Edwards; Kim Lauper; Yoshiya Tanaka; Elena Nikiphorou; Russka Shumnalieva; Latika Gupta; Jeffrey A Sparks; Dzifa Dey; Wilson Bautista-Molano; Simone Battista; et al. (RMD Open)