Charantharayil Gopalan, B, Namboodiri, N, Abdullakutty, J, Lip, G Y, Koshy, A G, Krishnan Nair, V, Babu, S, Muhammed, S, Azariah, J L, George, R, Nambiar, A, Govindan, U, Zachariah, G, Kumaraswamy, N, Chakanalil Govindan, S, Natesan, S, Roby, A, Velayudhan Nair, K, Pillai, A M, Daniel, R & Kerala AF Registry Investigators 2019, ' Kerala Atrial Fibrillation Registry : a prospective observational study on clinical characteristics, treatment pattern and outcome of atrial fibrillation in Kerala, India, cohort profile ', BMJ Open, vol. 9, no. 7, e025901 . https://doi.org/10.1136/bmjopen-2018-025901 BMJ Open