Kristina Yasmin Rust

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INTRODUCTION Phosphodiesterase type 5 inhibitors such as sildenafil, vardenafil, and tadalafil are a class of drugs used primarily in the treatment of erectile dysfunction. Sildenafil and tadalafil(More)
Tramadol was found in a man's hair sample during an abstinence test necessary to regain his driving license. The suspect denied having taken tramadol claiming external contamination as the reason for(More)
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