Schünemann Holger J, Zhang Yuqing, Oxman Andrew D
McMaster GRADE Centre and Department of Health Research Methods, Evidence, and Impact, McMaster University Health Sciences Centre, Hamilton, Ontario, Canada
Department of Medicine, McMaster University Health Sciences Centre, Hamilton, Ontario, Canada.
BMJ. 2019 Jul 19;366:l4606. doi: 10.1136/bmj.l4606.