38007ee0d146d310VgnVCM100000c2b1d38dRCRDapproved/UMICH/stats/Home/People/Faculty/Faculty PublicationsEfficient semiparametric marginal estimation for longitudinal/clustered data08007ee0d146d310VgnVCM100000c2b1d38d____Efficient semiparametric marginal estimation for longitudinal/clustered dataWang, NaisyinR. J. Carrolle;X. WinnwangaaJASA2005147-157jjsantosjjsantos1363184870280