Investigation of candidate genes reveals significant statistical epistasis between DISC1 and TPH2 in Bulgarian affective disorder patients. - Ivanova-Stoevska, Mina; Penchev, Mladen; Stoyanova, Vessela; Vladimirova, Rossitza; Milanova, Vihra; Kremensky, Ivo; Mitev, Vanio; Kaneva, Radka (Biotechnology & Biotechnological Equipment, 2017)