أرسل هذا في رسالة قصيرة: Assessment of Contamination and Misclassification Biases in a Randomized Controlled Trial of a Social Network Peer Education Intervention to Reduce HIV risk Behaviors Among Drug Users and Risk Partners in Philadelphia, PA and Chiang Mai, Thailand

 _    _    _    _     _____    __   __    ______  
| \  / || | || | ||  |__  //   \ \\/ //  /_   _// 
|  \/  || | || | ||    / //     \ ` //   `-| |,-  
| .  . || | \\_/ ||   / //__     | ||      | ||   
|_|\/|_||  \____//   /_____||    |_||      |_||   
`-`  `-`    `---`    `-----`     `-`'      `-`'