function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Parasitologica', 1],
    ['Akad. Nauk SSSR', 1],
    ['Anales del Instituto de Biologia Universidad de Mexico', 1],
    ['Fauna Arctica', 1],
    ['Izvestiya Tikhookeanskoi Nauchno-Promyslovi Ostantsii', 1],
    ['Journal of Parasitology', 1],
    ['Primer Congress Nacional de Pesquerías Marítimas e Industry Derivadas, Mar del Plata, 24 - 29 th October 1949, Buenos Aires', 1],
    ['Studia Marina Sinica', 1],
    ['Trudy Morskoi Nauchnyi Institut, Moskva', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=9)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);