Japan-based online platform for medical professionals M3 has acquired a majority stake in Bengaluru-based healthtech startup DailyRounds for an undisclosed amount. This marks M3's foray into case-based problem-solving community platform and medical test preparation business in India. DailyRounds app was founded in 2014 by Deepu Sebin, Nimmi Cherian and Priyaank Choubey.