00351nam a2200133Ia 4500008004100000020001800041041000800059082001000067100001300077245003200090250001100122260006100133650002300194260624s2023 xx 000 0 und d a9789348094957 aeng a614.5 aWarren S aDesigning Clinical Research a5th ed bWolters Kluwer /Lippinocott Williams & Wilkins2023c2023 acommunity Medicine