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Home Q & A Board Biology-Related Homework Help Medicine Nursing and Clinical
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efi efi
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6 years ago
What type of study occurs when a sample of both users and nonusers of oral contraceptives over a 20-year period are followed to determine if there were any long-term side effects?
 
  A) Controlled
  B) Retrospective
  C) Prospective
  D) Crossover
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ericpie13ericpie13
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6 years ago
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efi Author
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6 years ago
This calls for a celebration Person Raising Both Hands in Celebration
loki1345
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
jbag1237
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2 hours ago
Helped a lot
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