RT Journal Article SR Electronic T1 Frugal development and deployment of an innovative mobile health platform for COVID-19 in Sri Lanka: the case of SelfShield app JF BMJ Innovations JO BMJ Innov FD All India Institute of Medical Sciences SP 604 OP 608 DO 10.1136/bmjinnov-2021-000836 VO 7 IS 4 A1 Pandula Siribaddana A1 Chathura Wirasinghe A1 Sahan Perera A1 Dilshan Ganepola A1 Vajira H W Dissanayake YR 2021 UL http://innovations.bmj.com/content/7/4/604.abstract AB