Zenker, M., Horn, D., Wieczorek, D., Allanson, J., Pauli, S., Van der Burgt, I., et al. (2007). SOS1 is the second most common Noonan gene but plays no major role in cardio-facio-cutaneous syndrome. Journal of Medical Genetics, 44: 1, pp. 651-656. Retrieved from http://dx.doi.org/10.1136/jmg.2007.051276.