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Comment
. 2001 Apr;75(4):835-7.
doi: 10.1016/s0015-0282(01)01759-9.

Selection of controls--always a challenge

B Scoccia, K Elter, L R Nelson
Free article
Comment

Selection of controls--always a challenge

B Scoccia et al. Fertil Steril. 2001 Apr.
Free article
No abstract available

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