Jaipur: Endorsing Congress leader Rahul Gandhi's call for a nationwide lockdown, Rajasthan Chief Minister Ashok Gehlot on Thursday said it can help in breaking the chain of COVID-19 if planned properly.There is already a shortage of oxygen, medicines and other equipment, and the country might soon face a shortage of medical staff as well, he warned."I fully endorse the call given by @RahulGandhi ji that national lockdown is the only option left.