function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Assmar, Alice Carvalho & Pires Machado, Renato José', 1],
    ['Brauer, Friedrich', 1],
    ['Canbulat, Savaş', 1],
    ['Dubatolov, V. V. & Zinchenko, V. K.', 1],
    ['Hagen, Hermann August Dr.', 1],
    ['Hassan, Muhammad Asghar & Oswald, John D. & Zia, Ahmed', 2],
    ['LeSage, Laurent & Savard, Karine & Klimaszewski, Jan', 2],
    ['Monserrat, Victor J.', 1],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Tillier, Pierre', 3],
    ['Zhao, Yang & Tian, Yanlin & Liu, Zhiqi', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);