A Sustainable Community-Based Model of Noncommunicable Disease Risk Factor Surveillance (Shraddha-Jagrithi Project): Protocol for a Cohort Study - Jaideep Menon; Mathews Numpeli; Sajeev P Kunjan; Beena V Karimbuvayilil; Aswathy Sreedevi; Jeemon Panniyamakkal; Rakesh P Suseela; Rajesh Thachathodiyil; Amitava Banerjee (JMIR Research Protocols, 2021)