Smokers inhale more tar, nicotine and carbon monoxide when measured with WHO method RIVM has measured the amount of tar, nicotine and carbon monoxide (TNCO) in all filter cigarettes sold in the Netherlands with the WHO Intense method.
More gonorrhoea, syphilis and chlamydia at Dutch STI clinics An increasing number of clients tested at a Dutch STI clinic for a sexually transmitted infection (STI) is diagnosed with gonorrhoea, syphilis and chlamydia.