there were several people from different health-related backgrounds (physical therapists, epidemiologists, lay-people)... lay-people???

http://multitran.ru/c/m.exe?HL=2&L1=1&L2=2&EXT=0&s=lay-people
http://multitran.ru/c/m.exe?HL=2&L1=1&L2=2&EXT=0&s=layman

The interview questionnaire was designed specifically for the purposes of this study using rigorous questionnaire design methodology. Specifically, following content creation, the questionnaire was pilot tested by having several people from different health-related backgrounds (physical therapists, epidemiologists, laypeople) read the questionnaire and suggest modifications to ensure clarity and completeness of the text. The questionnaire was translated into French and then back-translated by a bilingual physical therapist, again using rigorous methodology for both the forward and backward translations. The questionnaire components included:

неспециалисты, люди, не имеющие отношения к медицине (sa nephew)