function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Broad, Gavin R.', 8],
    ['Ghahari, H. & Jussila, R. & I, Northwestern', 1],
    ['Ghahari, H. & Jussila, R. & Šedivý, J.', 3],
    ['Heydari, Maryam Zardouei & Rakhshani, Ehsan', 1],
    ['Homson', 2],
    ['Kolarov, J.', 5],
    ['Kolarov, J. & Bordera, S.', 4],
    ['M. F & Kirtay, H. & Birol, O.', 3],
    ['Riedel & Pénigot & Schwarz & Diller & Johansson & Japoshvili, G.', 2],
    ['Schwarz, Martin & Holy, Kamil', 2],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Watanabe, Kyohei', 3],
    ['Çoruh, Saliha & Kolarov, Janko & Çoruh, Irfan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);