function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abe, Hirokazu & Sato-Okoshi, Waka', 3],
    ['Bick, Andreas & Guggolz, Theresa & Götting, Miriam', 1],
    ['Delgado-Blas, Victor Hugo & Salazar-Silva, Patricia', 2],
    ['Faulwetter, Sarah & Simboura, Nomiki & Katsiaras, Nikolaos', 2],
    ['Greaves, Elizabeth & Wilson, Robin', 6],
    ['Gunton, Laetitia M. & Kupriyanova, Elena K. & Alvestad, Tom', 1],
    ['Mikac, Barbara', 1],
    ['Sikorski, Andrey & Pavlova, Lyudmila', 8],
    ['Sikorski, Andrey & Pavlova, Lyudmila & Martin, Daniel', 9],
    ['Sikorski, Andrey V. & Pavlova, Lyudmila V. & Sardá, Rafael', 2],
    ['Sikorski, Andrey V. & Radashevsky, Vasily I. & Castelli, Alberto', 7],
    ['Ward, L. A.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);