Alternative medicine: Herbal drugs and their critical appraisal – Part I.- Current and potential therapies for the treatment of herpesvirus infections.- Quantitiative structure-activity relationships of antianginal drugs.- Purine analogs as CDK enzyme inhibitory agents: A survey and QSAR analysis.- Anti-influenza drugs and neuraminidase inhibitors.- Index Vol. 56.- Index of titles, Vol. 1-56.- Author and paper index, Vol. 1-56.