Association of the 103I MC4R allele with decreased body mass in 7937 participants of two population-based surveys. - Heid,IM.; Vollmert,C.; Hinney,A.; Döring,A.; Geller,F.; Löwel,H.; Wichmann,HE.; Illig,T.; Hebebrand,J.; Kronenberg,F. (J Med Genet, 2005)