function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Czerny, Leander', 1],
    ['Gornostaev, N. G.', 2],
    ['Gornostaev, N. G. & Kulikov, A. M.', 4],
    ['Gornostaev, N. G. & Kulikov, A. M. & Sorokina, S. Yu.', 2],
    ['Gornostaev, N. G. & Lyupina, Yu. V.', 4],
    ['Gornostaev, N. G. & Sorokina, S. Yu.', 4],
    ['Ivannikov, A. V. & Katokhin, A. V. & Sidorenko, V. S.', 1],
    ['Jens-H', 3],
    ['Rampasso, Augusto Santos & O’Grady, Patrick Michael', 1],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Tidon, Rosana & Almeida, Jonathan Mendes De', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);