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▪ Websites
- The Human Cytochrome P450 (CYP) Allele Nomenclature Database. www.cypalleles.ki.se/cyp2d6.htm
- Motulsky HJ. Analyzing data with GraphPad prism. GraphPad software Inc., San Diego, CA, USA (1999). www.graphpad.com
- Rasoft® Sample Size Calculator. www.raosoft.com/samplesize.html
- VassarStats: Website for Statistical Computation. www.vassarstats.net/index.html
- National Institute of Statistics. Provisional population estimates of the resident population: Portugal, NUTS II, in 2011 [In Portuguese]. Lisbon: INE, 2012. Click here for link