PT  - JOURNAL ARTICLE
AU  - Stephen J. Zyzanski
AU  - Susan A. Flocke
AU  - L. Miriam Dickinson
TI  - On the Nature and Analysis of Clustered Data
AID  - 10.1370/afm.197
DP  - 2004 May 01
TA  - The Annals of Family Medicine
PG  - 199--200
VI  - 2
IP  - 3
4099  - http://www.annfammed.org/content/2/3/199.short
4100  - http://www.annfammed.org/content/2/3/199.full
SO  - Ann Fam Med2004 May 01; 2