The effectiveness of a low-intensity problem-solving intervention for common adolescent mental health problems in New Delhi, India: protocol for a school-based, individually random... by Parikh, R, Michelson, D, Malik, K, Shinde, S, Weiss, HA, Hoogendoorn, A, Ruwaard, J, Krishna, M, Sharma, R, Bhat, B, Sahu, R, Mathur, S, Sudhir, P, King, M, Cuijpers, P, Chorpita, BF, Fairburn, CG, Patel, V