function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cloutman, Donald G. & McAllister, Chris T. & Robison, Henry W.', 1],
    ['Fankoua, Sévérin-Oscar & Bayiha, Etienne Didier Bassock', 4],
    ['Mendoza-Garfias, Berenit & García-Prieto, Luis', 7],
    ['Musilová, Na Ď A & Ehulková, Eva Ř & Gelnar, Milan', 15],
    ['Nitta, Masato & Ishikawa, Takanori & Hagiwara, Tomiji', 1],
    ['Nitta, Masato & Nagasawa, Kazuya', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);