And good luck trying to get it back – it can take years (of therapy) before you pass the annual MPAs.
If you fail to pass the MPA, the authorities will automatically revoke your license.
Documentary-makers in Germany have claimed that legalising prostitution has turned the country's capital Berlin into World biggest brothel.
Sex trade laws were radically liberalised by the German government in 2002 but a documentary called Sex - Made In Germany estimates that over one million men pay for sex every day.
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