function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aston, Paul', 1],
    ['Azadbakhsh, Saeed & Nozari, Jamasb', 1],
    ['Bonelli, Franco Andrea', 1],
    ['Bousquet, Yves', 5],
    ['Faisal, Mohammad & Singh, Sudhir', 1],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 2],
    ['Guéorguiev, Borislav & Liang, Hongbin', 16],
    ['Hristovski, Slavčo & Guéorguiev, Borislav', 2],
    ['Kostova, Rumyana & Gueorguiev, Borislav', 2],
    ['Merene, Yeshitla & Lorenz, Wolfgang & Opgenoorth, Lars', 4],
    ['Pilon, Nicola & Cardarelli, Elisa & Bogliani, Giuseppe', 2],
    ['Webster, Reginald P. & Webster, Vincent L.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);