Cochrane Qualitative and Implementation Methods Group guidance series—paper 2: methods for question formulation, searching, and protocol development for qualitative evidence synthesis
Journal article published in 2018 by
J. L. Harris,
A. Booth,
M. Cargo,
K. Hannes,
A. Harden,
K. Flemming,
R. Garside 
,
T. Pantoja,
J. Thomas,
J. Noyes
,
T. Pantoja,
J. Thomas,
J. Noyes
