Methodological challenges in whole systems research.
Elder
Charles
C
Kaiser Permanente Center for Health Research, Portland, OR, USA.
Aickin
Mikel
M
Bell
Iris R
IR
Fønnebø
Vinjar
V
Lewith
George T
GT
Ritenbaugh
Cheryl
C
Verhoef
Marja
M
D035843:Biomedical Research / Q000458:organization & administration*; D002986:Clinical Trials as Topic / Q000592:standards; D000529:Complementary Therapies / Q000458:organization & administration*; D019317:Evidence-Based Medicine / Q000458:organization & administration*; D006801:Humans; D008962:Models, Theoretical; D012107:Research Design; D012109:Research Support as Topic; D014481:United States