Abstract Background Surveillance of Over-the-Counter pharmaceutical (OTC) sales as a potential early indicator of developing public health conditions. in particular in cases of interest to biosurvellance. has been suggested in the literature. This paper is a continuation of a previous study in which we formulated the problem of estimating clinical data from OTC sales in terms of optim... https://fitnessgravesyardes.shop/product-category/control-key-board/