Sherin Jose ChockattuBengaluru, India His pole, with pewter basins hung,Black, rotten teeth in order strung,Rang’d cups that in the window stood,Lin’d with red rags, to look like blood,Did well his threefold trade explain,Who shav’d, drew teeth, and breathd a vein —John Gay (The Goat Without a Beard, 1727) For over three millennia, self-taught physicians and…