https://www.reuters.com/article/us-health-coronavirus-softbank-group/softbanks-son-offers-to-donate-face-masks-after-coronavirus-test-kit-offer-slammed-idUSKBN20Z23S >SoftBank founder Masayoshi Son on Thursday tweeted an offer to donate a million free face masks to help fight the coronavirus outbreak a day after twitter users criticized his proposal to give away test kits as an unnecessary burden on clinics and hospitals.