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1472-6963-8-113
1472-6963-8-113
https://scigraph.springernature.com/pub.10.1186/1472-6963-8-113
Do postage stamps versus pre-paid envelopes increase responses to patient mail surveys? A randomised controlled trial
P2888
Q33338234-4799A436-457E-4CB7-98DE-4C5121C04658
P2888
1472-6963-8-113
https://scigraph.springernature.com/pub.10.1186/1472-6963-8-113