In cooperation with the Sports Association of the Palatinate (SBP). a survey was conducted on substance use by recreational and amateur athletes. Distribution of the online questionnaire took place by means of chain-referral sampling. and questions on substance use were presented using the randomized response technique (RRT) to protect the anonymity of respondents and prevent socially... https://www.footballmediaservices.com/product-category/mig-nozzle-dip/