Garner P., Hopewell S., Chandler J., MacLehose H., Schünemann HJ., Akl EA., Beyene J., Chang S., Churchill R., Dearness K., Guyatt G., Lefebvre C., Liles B., Marshall R., Martínez García L., Mavergames C., Nasser M., Qaseem A., Sampson M., Soares-Weiser K., Takwoingi Y., Thabane L., Trivella M., Tugwell P., Welsh E., Wilson EC., Schünemann HJ., Panel for updating guidance for systematic reviews (PUGs) None.