Sroiwatana, Chullasak, Ratana Sachdav, Manit Sripramote, and Nantana Kaewpila. 2011. “Quality of Histological Sampling of Endometrium: a Comparison between the Wallach Endocell Sampler and Formal Fractional Curettage”. Vajira Medical Journal : Journal of Urban Medicine 46 (2):87-95. https://he02.tci-thaijo.org/index.php/VMED/article/view/177.