Prevention of exercise-induced bronchospasm in pediatric asthma patients: comparison of salmeterol powder with albuterol
Intolerance of cow's milk and chronic constipation in children
Risk of cancer among offspring of childhood-cancer survivors
Environmental tobacco smoke and middle ear disease in preschool-age children
Randomised trial of analgesic effects of sucrose, glucose, and pacifiers in term neonates
Kryteria wyboru badań i słownik podstawowych pojęć
Kryteria wyboru badań i słownik podstawowych pojęć