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	1.	The volume of retractile testes. [electronic resource] by Goede, J van der Voort-Doedens, L M Sijstermans, K Hack, W W M Producer: 20131209 In: The Journal of urology vol. 186 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Acquired undescended testis: putting the pieces together. [electronic resource] by Hack, W W M Goede, J van der Voort-Doedens, L M Meijer, R W Producer: 20120426 In: International journal of andrology vol. 35 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	The frequency of undescended testis from birth to adulthood: a review. [electronic resource] by Sijstermans, K Hack, W W M Meijer, R W van der Voort-Doedens, L M Producer: 20080304 In: International journal of andrology vol. 31 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Long-term testicular growth and position after orchidopexy for congenital undescended testis. [electronic resource] by Sijstermans, K Hack, W W M van der Voort-Doedens, L M Meijer, R W Producer: 20100519 In: Urologia internationalis vol. 83 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Puberty stage and spontaneous descent of acquired undescended testis: implications for therapy? [electronic resource] by Sijstermans, K Hack, W W M van der Voort-Doedens, L M Meijer, R W Haasnoot, K Producer: 20070112 In: International journal of andrology vol. 29 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	Prevalence of testicular microlithiasis in asymptomatic males 0 to 19 years old. [electronic resource] by Goede, J Hack, W W M van der Voort-Doedens, L M Sijstermans, K Pierik, F H Producer: 20091002 In: The Journal of urology vol. 182 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	7.	Natural course of acquired undescended testis in boys. [electronic resource] by Hack, W W M Meijer, R W van der Voort-Doedens, L M Bos, S D Haasnoot, K Producer: 20030701 In: The British journal of surgery vol. 90 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	8.	Reduction in the number of orchidopexies for cryptorchidism after recognition of acquired undescended testis and implementation of expectative policy. [electronic resource] by Hack, W W M van der Voort-Doedens, L M Sijstermans, K Meijer, R W Pierik, F H Producer: 20070817 In: Acta paediatrica (Oslo, Norway : 1992) vol. 96 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	9.	Surgical findings in acquired undescended testis. [electronic resource] by Meijer, R W Hack, W W M van der Voort-Doedens, L M Haasnoot, K Bos, S D Producer: 20050414 In: Journal of pediatric surgery vol. 39 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	10.	Previous testicular position in boys referred for an undescended testis: further explanation of the late orchidopexy enigma? [electronic resource] by Hack, W W M Meijer, R W Van Der Voort-Doedens, L M Bos, S D De Kok, M E Producer: 20030904 In: BJU international vol. 92 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	11.	Testicular microlithiasis in boys and young men with congenital or acquired undescended (ascending) testis. [electronic resource] by Goede, Joery Hack, Wilfried W M van der Voort-Doedens, L M Pierik, Frank H Looijenga, Leendert H J Sijstermans, Karlijn Producer: 20100429 In: The Journal of urology vol. 183 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	12.	Prevalence of acquired undescended testis in 6-year, 9-year and 13-year-old Dutch schoolboys. [electronic resource] by Hack, W W M Sijstermans, K van Dijk, J van der Voort-Doedens, L M de Kok, M E Hobbelt-Stoker, M J Producer: 20070116 In: Archives of disease in childhood vol. 92 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	13.	[Previous testicular position in boys who underwent orchidopexy due to undescended testis at the Alkmaar Medical Center, the Netherlands, during the period 1986-1999]. [electronic resource] by Hack, W W M van der Voort-Doedens, L M de Kok, M E Meijer, R W Bos, S D Hobbelt-Stoker, J M Producer: 20020801 In: Nederlands tijdschrift voor geneeskunde vol. 146 Availability: No items available. Save to lists Add to cart (remove)
	14.	[The non-scrotal testes: current standpoints of the Paediatric Urology Workgroup of the Dutch Urological Association]. [electronic resource] by Hack, W W M Sijstermans, K van der Voort-Doedens, L M Meijer, R W Heij, H A Delemarre-van de Waal, H A Pierik, F H Producer: 20090102 In: Nederlands tijdschrift voor geneeskunde vol. 152 Availability: No items available. Save to lists Add to cart (remove)
	15.	[Undescended testis: current views and advice for treatment]. [electronic resource] by Hack, W W M Sijstermans, K van der Voort-Doedens, L M Meijer, R W Heij, H A Delemarre-van de Waal, H A Pierik, F H Producer: 20080401 In: Nederlands tijdschrift voor geneeskunde vol. 152 Availability: No items available. Save to lists Add to cart (remove)
	16.	Normative values for testicular volume measured by ultrasonography in a normal population from infancy to adolescence. [electronic resource] by Goede, J Hack, W W M Sijstermans, K van der Voort-Doedens, L M Van der Ploeg, T Meij-de Vries, A Delemarre-van de Waal, H A Producer: 20111108 In: Hormone research in paediatrics vol. 76 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)