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It is also likely that the derived date of mRCC diagnosis in patients was set later than the actual date, as it was based on an estimate (algorithm) rather than an observed date.
Initially, a fourth criterion was used to define the derived date of mRCC diagnosis, namely if, secondary to an RCC diagnosis, a patient visited a urology department ⩾4 times within a 12-month period.
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Results of coalescence-based analyses suggest that for most island populations the mtDNA lineages from which they were derived date from the Pleistocene.
As the Cancer Register did not include full information on the date for mRCC diagnosis, the mRCC population was defined based on a derived date for diagnosis of metastatic disease.
However, only 10 of these diagnoses occurred before our derived date for suspicion of, or referral for, ovarian cancer.
Often they are "derived dates".
Since ultrasound was introduced in the late 1970s, it quickly replaced last menstrual periods as the standard estimation of gestational age in clinical practice, and thus post-term pregnancies were defined based on ultrasound derived dates.
Swadesh and others then tried to quantify the method, deriving the date that two languages split from their percentage of shared cognates.
Kim approached the parents through a group called 4/16 achievements, the name derived from the date of the accident, 16 April.
The phylogenetic trees derived to date from most of the "green" proteins in chromalveolates (e.g. PRK, periplasmic serin protease IV, soluble inorganic pyrophosphatase, γ-Tocopherol O-methyltransferase) suggest that EGT occurred before the divergence of Chlorophyta and Streptophyta, in accordance with the results presented in this study.
This date was derived from dates of last menstrual period (LMP), where available, or by ultrasound if there was a conflict with dates as assessed by LMP (>6 days) or LMP was unavailable.
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