Promwong U, Suthutvoravut S, Patrachai S, Singhakajen V. Factors Associated with Pregnancy among Primigravida Adolescents at King Chulalongkorn Memorial Hospital. Rama Med J [Internet]. 2010 Dec. 27 [cited 2024 Apr. 29];33(4):236-41. Available from: https://he02.tci-thaijo.org/index.php/ramajournal/article/view/152225