Bioavalaibility and pharmacokinetic comparison of two formulations of metformin 850 mg tablets in healthy Colombian volunteers. - HOLGUÍN, GLORIA; CUESTA, FANNY; ARCHBOLD, ROSENDO; RESTREPO, MARGARITA; PARRA, SERGIO; PEÑA, LINA; MONTOYA, BLANCA; RÍOS, JUAN CARLOS; TORO, VICTORIA EUGENIA; RUIZ, ADRIANA (Colombia Medica, 2011)