EPIDEMIOLOGY OF INFLUENZA IN LOWER SAXONY DURING THE PERIOD 1968-1978 WITH PARTICULAR EMPHASIS ON SUBTYPES A(H3N2) AND A(H1N1) IN WINTER 1977-78WILLERS H; HOPKEN W.1979; MED. MICROBIOL. IMMUNOL.; DEU; DA. 1979; VOL. 167; NO 1; PP. 21-27; BIBL. 10 REF.Article

Zentralstaat und kommunale Selbsverwaltung in Bulgarien 1880-1910. Zum Charakter eines « Modernisierungskonfliktes » = Etat central et autonomie des communes en Bulgarie 1880-1910. Caractère d'un « Conflit de la modernisation »HÖPKEN, W.Jahrbücher für Geschichte Osteuropas. 1991, Vol 39, Num 2, pp 199-213, issn 0021-4019Article

SERO-EPIDEMIOLOGIE DER AKUTEN VIRUSHEPATITIS. = SEROEPIDEMIOLOGIE DE L'HEPATITE VIRALE AIGUEMULLER R; WILLERS H; HOPKEN W et al.1978; MUENCH. MED. WSCHR.; DTSCH.; DA. 1978; VOL. 120; NO 15; PP. 517-520; ABS. ANGL.; BIBL. 21 REF.Article

EPIDEMIOLOGIE DER INFLUENZA. = EPIDEMIOLOGIE DE LA GRIPPEWILLERS H; HOPKEN W; KNOCKE KW et al.1977; MED. WELT; DTSCH.; DA. 1977; VOL. 28; NO 40; PP. 1595-1598Article

THE ENZYME-LINKED IMMUNOSORBENT ASSAY (ELISA) FOR DETERMINATION OF IGG AND IGM ANTIBODIES AFTER INFECTION WITH MUMPS VIRUSNICOLAI SCHOLTEN ME; ZIEGELMAIER R; BEHRENS F et al.1980; MED. MICROBIOL. IMMUNOL.; DEU; DA. 1980; VOL. 168; NO 2; PP. 81-90; BIBL. 8 REF.Article

THE SEROEPIDEMIOLOGICAL PATTERN OF ACUTE VIRAL HEPATITIS. AN EPIDEMIOLOGICAL STUDY ON VIRAL HEPATITIS IN THE HANNOVER REGION.MULLER R; WILLERS H; FROSNER GG et al.1978; INFECTION; GERM.; DA. 1978; VOL. 6; NO 2; PP. 65-70; ABS. ALLEM.; BIBL. 32 REF.Article

DECREASE IN INCIDENCE OF HEPATITIS A INFECTIONS IN GERMANYFROSNER G; WILLERS H; MULLER R et al.1978; INFECTION; DEU; DA. 1978; VOL. 6; NO 6; PP. 259-260; ABS. GER; BIBL. 5 REF.Article

Thymopentin (Timunox^®) in der Therapie eines Patienten mit AIDS und Kaposi-Sarkom = Thymopentine (Tmunox^®) dans le traitement d'un patient atteint de SIDA et de sarcome de Kaposi = Thymopentin (Timunox^®) in the treatment of a patient with AIDS and Kaposi sarcomaSCHEDEL, A; WILLERS, H; GERDELMANN, R et al.Aktuelle Dermatologie. 1985, Vol 11, Num 6, pp 187-189, issn 0340-2541Article

Cytomegalovirus infection in HIV-1-infected individualsSTUTTMANN, U; WILLERS, H; GERDELMANN, R et al.Infection. 1988, Vol 16, Num 2, pp 111-114, issn 0300-8126Article