Authors’ contributions
PD
AA and VSN designed the study. KC, VSN and AA recruited the patients. SA, DK, AK and ST followed up the patients across both the centres, collected the data and updated the database. SA, DK, PS, SM and AK helped in data retrieval and cleaning. PD and SM conducted the ELISA for IFN-related proteins. KC and AA analysed the data. KC drafted the manuscript, and AA and VSN critically reviewed and edited it. All the authors agree to all the contents in the manuscript.