function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brady, George Stewardson', 2],
    ['Chitnarin, Anisong & Crasquin, Sylvie & Forel, Marie-Béatrice', 5],
    ['Franz, Matthias & Ebert, Martin & Stulpinaite, Ruta', 1],
    ['Hiruta, Shin-ichi', 1],
    ['Kempf, Eugen Karl', 2],
    ['Kornicker, Louis S. & Van, Barry W. M. & Bakel', 3],
    ['Luz, Nathália Carvalho Da & Coimbra, João Carlos', 3],
    ['Wannenmacher, Norbert & Dietze, Volker & Franz, Matthias', 3],
    ['Warne, Mark T. & Jones, Peter J. & Kornicker, Louis S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);