function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alekseev, Vitalii I. & Drotikova, Anna M. & Rozhina, Viktoria I.', 1],
    ['Bezděk, Jan & Daccordi, Mauro & Kantner, František', 1],
    ['Cho, H. - W. & An, S. L.', 7],
    ['Ekiz, Ali Nafiz & Şen, İsmail & Aslan, Ebru Gül & Gök, Ali', 1],
    ['Fabricii, Ioh. Christ.', 1],
    ['Fabricius, Johann Christian', 1],
    ['Fuessly, Johann Caspar', 1],
    ['Guskova, Elena V.', 3],
    ['Linnaeus, Carolus', 86],
    ['Mitter, Heinz', 1],
    ['Müller, Otto Friedrich', 1],
    ['Roie, Martijn Van & Kuhlmann, Michael & Mack, Anne', 4],
    ['Ruchin, Alexaner B. & Egorov, Leonid V. & Alekseev, Sergei K.', 2],
    ['Schrank, Franz von Paula', 2],
    ['Webster, Reginald P. & LeSage, Laurent & DeMerchant, Ian', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=113)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);