Cita APA

Quan, S., Yang, H., Tanyingoh, D., Villeneuve, P. J., Stieb, D. M., Johnson, M., . . . Kaplan, G. G. (2015). Upper gastrointestinal bleeding due to peptic ulcer disease is not associated with air pollution: A case-crossover study. BMC Gastroenterol.

Chicago Style Citation

Quan, Samuel, et al. "Upper Gastrointestinal Bleeding Due to Peptic Ulcer Disease Is Not Associated With Air Pollution: A Case-crossover Study." BMC Gastroenterol 2015.

Cita MLA

Quan, Samuel, et al. "Upper Gastrointestinal Bleeding Due to Peptic Ulcer Disease Is Not Associated With Air Pollution: A Case-crossover Study." BMC Gastroenterol 2015.