Giuseppe ZuccalÀ, Marco Pahor, Francesco Landi, Giorgio Gasparini, Francesco Pagano, PierUgo Carbonin et al
Zuccalà G, Pahor M, Landi F, Gasparini G, Pagano F, Carbonin P et al.
Use of calcium antagonists and need for perioperative transfusion in older patients with hip fracture: observational study
BMJ 1997; 314 :643
doi:10.1136/bmj.314.7081.643