[1] Univ Los Andes, Dept Farmacognosia & Med Organ, Lab Med Organ, Detras HULA,Sect Campo Oro, Merida 5101, Venezuela
[2] Univ Salerno, Dipartimento Farm, I-84084 Fisciano, SA, Italy
[3] Univ Basilicata, Dipartimento Sci, I-85100 Potenza, Italy
[4] Univ Pisa, Dipartimento Farm, I-56126 Pisa, Italy