Swasthya Pahal (Health for All) Using a Sustainable, Multisector, Accessible, Affordable, Reimbursable, and Tailored Informatics Framework in Rural and Urban Areas of Chennai, Tamil Nadu: Protocol for a Quantitative Study - Ashish Joshi; Krishna Mohan Surapaneni; Ashoo Grover; Harpreet Kaur; Sofia Rani Saggu; Doilyn Oliveira (JMIR Research Protocols)