By Krishna N. Das NEW DELHI (Reuters) -India said it is testing samples of cough syrups produced by local manufacturer Maiden Pharmaceuticals for export after the World Health Organization said its products were linked to the deaths of dozens of children in Gambia. The deaths of 66 children in the West African country could deal a major blow to India’s image as a “pharmacy of the world”. The WHO this week said laboratory analysis of four Maiden products – Promethazine Oral Solution, Kofexmalin Baby Cough Syrup, Makoff Baby Cough Syrup and Magrip N Cold Syrup – had confirmed “unacceptable” amou…