TY  - RPRT
TI  - Why are you calling me? How study introductions change response patterns.
AU  - Dylan M Smith
AU  - Norbert Schwarz
AU  - Todd R Roberts
AU  - Peter A Ubel
PY  - 2006
DO  - 10.1007/s11136-005-4529-5
UR  - https://pubmed.ncbi.nlm.nih.gov/16688495/
ID  - 16688495
ER  -