DOI:
10.1055/s-00000060
PPmP - Psychotherapie · Psychosomatik · Medizinische Psychologie
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References
Sadler GR, Lee HC, Lim RSH. et al.
Recruitment of hard-to-reach population subgroups via adaptations of the snowball sampling strategy.
Nurs Health Sci 2010;
12: 369-374
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