DR.WASIF S; DR.MOHSIN. An observative study of comparison of efficacy and tolerability between atenolol and combination of amolodopine with atenolol in the maintence therapy of hypertension in a tertiary care hospital. International Journal of Research in Pharmacology & Pharmacotherapeutics, v. 6, n. 4, p. 413-420, 3 May 2021.