Beyond interviews and focus groups: a framework for integrating innovative qualitative methods into randomised controlled trials of complex public health interventions.
Davis K, Minckas N, Bond V, Clark CJ, Colbourn T, Drabble SJ, Hesketh T, Hill Z, Morrison J, Mweemba O, Osrin D, Prost A, Seeley J, Shahmanesh M, Spindler EJ, Stern E, Turner KM, Mannell J. Beyond interviews and focus groups: a framework for integrating innovative qualitative methods into randomised controlled trials of complex public health interventions. Trials. 2019 Jun 06; 20(1):329.