Study Flowchart. Study Drug (Cholecalciferol) and Placebo (Normal Saline) matched for colour and volume of contents. 2 ‘Completed treatment’; administration of 2 doses of study drug/placebo (over first 2 months), with follow up assessments complete at all visits over a total duration of 3 months. * Includes all patients who completed treatment at end of 3 months, as well as those who died during, or defaulted from, treatment before completion (indicated for each treatment arm). Flow Diagram adapted from the CONSORT 2010 Statement: updated guidelines for reporting parallel group randomized trials.