function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Borowiec, Lech', 2],
    ['Borowiec, Lech & Świętojańska, Jolanta', 106],
    ['Cho, H. - W. & An, S. L.', 21],
    ['Lichtenstein, Anton August Heinrich', 3],
    ['Linnaeus, Carolus', 20],
    ['Petitpierre, Eduard & Sacarés, Antoni & Jurado-Rivera, José A.', 4],
    ['Rice, Marlin E.', 5],
    ['Ruchin, Alexaner B. & Egorov, Leonid V. & Alekseev, Sergei K.', 3],
    ['Sekerka, Lukáš', 5],
    ['Sekerka, Lukáš & Barclay, Maxwell V. L.', 14],
    ['Sekerka, Lukáš & Jia, Fenglong & Pang, Hong & Borowiec, Lech', 6],
    ['Sergeev, M. E.', 6],
    ['Simões, Marianna V. P. & Husemann, Martin & Sekerka, Lukáš', 7],
    ['Weber, Friedrich', 3],
    ['Świętojańska, Jolanta & Belczyk, Ewa', 4],
    ['Other (10)', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=221)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);