blood donation SMS
Sponsors
Guangzhou Blood Center
Conditions
Blood Donation
Unknown Phase
Recruit Blood Donors Via SMS During Epidemic of COVID-19
CompletedNCT04370886
Start: 2020-04-30End: 2020-05-10Updated: 2020-06-01
Recruit Blood Donors Via SMS During Epidemic of COVID-19 （Repeat Trial）
NCT04410458
Start: 2020-05-31End: 2020-06-12Target: 506517Updated: 2020-06-01
Recruit Blood Donors Via SMS During Epidemic of COVID-19 #Second Repeat Trial#
NCT04431180
Start: 2020-06-13End: 2020-06-30Target: 403535Updated: 2020-06-16