The article mentions the difficulties with clinical trials. It makes sense, now China running hundreds of studies on coronovirus with thousands of people: http:

The article mentions the difficulties with clinical trials. It makes sense, now China running hundreds of studies on coronovirus with thousands of people: http://www.chictr.org.cn/searchprojen.aspx?title=&officialname=&subjectid=&secondaryid=&applier=&studyleader=&ethicalcommitteesanction=&sponsor=&studyailment=coronavirus&studyailmentcode=&studytype=0&studystage=0&studydesign=0&minstudyexecutetime=&maxstudyexecutetime=&recruitmentstatus=0&gender=0&agreetosign=&secsponsor=&regno=&regstatus=0&country=&province=&city=&institution=&institutionlevel=&measure=&intercode=&sourceofspends=&createyear=0&isuploadrf=&whetherpublic=&btngo=btn&verifycode=&page=1 http://www.chictr.org.cn/searchprojen.aspx?title=&officialna... testing few drugs and their combination at a time, it's hard to do outside of epidemic.