function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. M', 15],
    ['Askew, Richard R. & Melika, George & Pujade-Villar, Juli', 24],
    ['Dale-Skey, Natalie & Askew, Richard R. & Noyes, John S.', 236],
    ['Janšta, Petr & Bouček, Zdeněk', 4],
    ['Janšta, Petr & Delvare, Gérard & Baur, Hannes', 20],
    ['Janšta, Petr & Křížková, Barbora & Vilímová, Jitka', 5],
    ['Lotfalizadeh, Hossein & Mirzaee, Zohreh', 4],
    ['Matsuo, Kazunori', 35],
    ['Matsuo, Kazunori & Yang, Man - Miao & Tung, Gene - Sheng', 4],
    ['Pérez-Benavides, A. Lucía & Hernández-Baz, Fernando', 7],
    ['Roques, A. & Skrzypczyńska, M.', 21],
    ['Roques, Alain & Copeland, Robert S. & Soldati, Laurent', 12],
    ['Stojanova, A. & Ghahari, H.', 36],
    ['Walker, Francis', 73],
    ['Xiao, Hui & Jiao, Tianyang & Hu, Tingyu', 7],
    ['Other (28)', 43]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=546)',
    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);