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Maturitas|June 1, 1997
Validity and reproducibility of self-reported age at menopause in women participating in the DOM-projectI den TonkelaarDocumenta Ophthalmologica. Advances in Ophthalmology|February 1, 1990
19th century mechanical models of eye movements, Donders' law, Listing's law and Helmholtz' direction circlesH J Simonsz, I den TonkelaarContraception|October 13, 1999
Preferred frequency and characteristics of menstrual bleeding in relation to reproductive status, oral contraceptive use, and hormone replacement therapy useI den Tonkelaar, B J OddensBreast Cancer Research and Treatment|January 1, 1996
Regularity and length of menstrual cycles in women aged 41-46 in relation to breast cancer risk: results from the DOM-projectI den Tonkelaar, F de WaardObstetrics and Gynecology|March 22, 2000
Determinants of long-term hormone replacement therapy and reasons for early discontinuationI den Tonkelaar, B J OddensHuman Reproduction (Oxford, England)|June 22, 1999
Psychosocial experiences in women facing fertility problems--a comparative surveyB J Oddens, I den Tonkelaar, H NieuwenhuyseBreast Cancer Research and Treatment|April 1, 1995
Body fat distribution in relation to breast cancer in women participating in the DOM-projectI den Tonkelaar, J C Seidell, H J ColletteDocumenta Ophthalmologica. Advances in Ophthalmology|January 1, 1991
Herman Snellen (1834-1908) and Müller's 'reform-auge'. A short history of the artificial eyeI den Tonkelaar, H E Henkes, G K van LeersumMaturitas|July 4, 1998
Menstrual cycle length preceding menopause in relation to age at menopauseI den Tonkelaar, E R te Velde, C W LoomanDocumenta Ophthalmologica. Advances in Ophthalmology|February 1, 1990
Antonie Cramer's explanation of accommodationI den Tonkelaar, H E Henkes, G K van LeersumPageof 3