A day after the World Health Organisation (WHO) endorsed resuming trials of anti-malarial drug hydroxychloroquine (HCQ) for treatment of Covid-19 patients, chief of Council for Scientific and Industrial Research (CSIR) Shekhar C Mande on Thursday welcomed the move saying “the suspension of the trial was based on a study which had several limitations”.A day after the World Health Organisation (WHO) endorsed resuming trials of anti-malarial drug hydroxychloroquine (HCQ) for treatment of Covid-19 patients, chief of Council for Scientific and Industrial Research (CSIR) Shekhar C Mande on Thursday welcomed the move saying “the suspension of the trial was based on a study which had several limitations”.