function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barševskis, Arvīds & Vorobjova, Irina', 3],
    ['Bologna, Marco A. & Poloni, Riccardo & Vázquez, Xavier A.', 4],
    ['Chûjô, Michio', 2],
    ['Dejean, Pierre François Marie Auguste', 3],
    ['Fairmaire, Léon', 4],
    ['Ghahari, Hassan & Vázquez, Xavier A. & Kubisz, Daniel', 48],
    ['Hudson, Logan', 5],
    ['Johnston, M. Andrew & Waite, Evan S. & Wright, Ethan R', 4],
    ['Peck, Stewart B.', 6],
    ['Poloni, Riccardo', 16],
    ['Ruchin, Alexaner B. & Egorov, Leonid V. & Alekseev, Sergei K.', 3],
    ['Tian, Ying & Ren, Guo-Dong & Li, Qiang', 3],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 4],
    ['Švihla, Vladimír', 33],
    ['Švihla, Vladimír & Dejean, in', 12],
    ['Other (19)', 22]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=172)',
    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);