function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Belousov, Igor A. & Kabak, Ilya I.', 19],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['Borges, Paulo A. V. & Oromí, Pedro & Serrano, Artur R. M.', 2],
    ['Bousquet, Yves', 81],
    ['Chapman, Anna Nicola', 2],
    ['Faille, Arnaud & Bourdeau, Charles & Fresneda, Javier', 3],
    ['Faille, Arnaud & Hofmann, Sylvia & Merene, Yeshitla', 5],
    ['Hristovski, Slavčo & Guéorguiev, Borislav', 21],
    ['Kostova, Rumyana & Bekchiev, Rostislav', 5],
    ['Kostova, Rumyana & Gueorguiev, Borislav', 12],
    ['Merene, Yeshitla & Lorenz, Wolfgang & Opgenoorth, Lars', 26],
    ['Schmidt, Joachim', 50],
    ['Schmidt, Joachim & Faille, Arnaud', 43],
    ['Szallies, Aleexander', 5],
    ['Uéno, Shun-Ichi Dr.', 3],
    ['Other (23)', 30]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=309)',
    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);