Design and validation of a method for evaluating medical device cleanliness by recovering and quantifying residual proteins on stainless plates oleh Miyuki Uematsu, Yuko Miyamoto, Masatake Shimizu, Tsuyoshi Kajiura, Atsushi Saito, Masaki Takashina, Satoshi Fujita, Yuko Nakano, Toshiaki Shimizu, Yuki Nagahara, Hayato Kosaka, Hiroki Muramatsu, Masafumi Mori, Takamasa Suzuki, Takayoshi Nakamura, Atsushi Tanemura, Junki Hosaka, Takahide Mori, Seiichi Kato, Ayaka Itagaki, Toshiki Inoue, Shinichi Matsumoto, Tomoko Naito, Shinji Fujii, Ryusuke Nakaoka, Eiichi Yamamoto