Volume 16, Issue 2 < /a > , Page 165-175, June 2016. < br/ > Purpose – One of the greatest challenges for drug regulation is valid, comprehensive surveillance of drugs after they reach the pharmaceutical market. The purpose of this paper is to propose a new method of individual and aggregate-level postmarket surve..."> Volume 16, Issue 2 < /a > , Page 165-175, June 2016. < br/ > Purpose – One of the greatest challenges for drug regulation is valid, comprehensive surveillance of drugs after they reach the pharmaceutical market. The purpose of this paper is to propose a new method of individual and aggregate-level postmarket surve..." /> Volume 16, Issue 2 < /a > , Page 165-175, June 2016. < br/ > Purpose – One of the greatest challenges for drug regulation is valid, comprehensive surveillance of drugs after they reach the pharmaceutical market. The purpose of this paper is to propose a new method of individual and aggregate-level postmarket surve..." />