function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Broad, Gavin R.', 134],
    ['Gauld, Ian D. & Fernández-Triana, José L.', 2],
    ['Horstmann, K.', 2],
    ['Karimi, Soroush & Ghassemi-Kahrizeh, Akbar & Hosseinzadeh, Abbas', 1],
    ['Kolarov, J.', 16],
    ['M. F & Kirtay, H. & Birol, O.', 5],
    ['M. F & M. Y & Buncukçu, A.', 4],
    ['Mohammadi, Abbas & Salah-A & Lotfalizadeh, Hosseinali', 1],
    ['Moreno, Alejandra González - & Bordera, Santiago', 1],
    ['Reynolds, Terry & van Noort, Simon', 1],
    ['Riedel & Pénigot & Schwarz & Diller & Johansson & Japoshvili, G.', 12],
    ['Riedel, Matthias & Ameri, Ali & Talebi, Ali Asghar', 2],
    ['Riedel, Matthias & Diller, Erich & Japoshvili, George', 8],
    ['Shimizu, So & Broad, Gavin R.', 1],
    ['Çoruh, Saliha & Kolarov, Janko & Çoruh, Irfan', 3],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=195)',
    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);