Complex interventions to implement a diabetic retinopathy care pathway in the public health system in Kerala: the Nayanamritham study protocol oleh Gopalakrishnan Netuveli, Rajeev Sadanandan, Raphael Wittenberg, Radha Ramakrishnan, Dolores Conroy, Rajan Khobragade, Bipin Gopal, Lakshmi Premnazir, Jyotsna Srinath, Simon George, Vasudeva Iyer Sahasranamam, Rajeevan Palpoo, Chitra Raghavan, Alwin Aniyankunju, Anju V Molly