function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Candek, Klemen & Gregoric, Matjaz & Kostanjsek, Rok', 2],
    ['Chamberlin, Ralph V.', 1],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 2],
    ['Estol, Narelle & Rodrigues, Everton Nei Lopes', 2],
    ['Hedin, Marshal & DELLINGER, Bob', 5],
    ['Hedin, Marshal & Milne, Marc A.', 37],
    ['Isaia, Marco & Paschetta, Mauro & Chiarle, Alberto', 1],
    ['Liu, Jie & Li, Shuqiang', 3],
    ['Lopez-Pancorbo, Alberto & Kunt, Kadir Boğaç & Blagoev, Gergin', 2],
    ['Lopez-Pancorbo, Alberto & Ribera, Carles', 1],
    ['Marusik, Yuri M. & Omelko, Mikhail M. & Koponen, Seppo', 1],
    ['Paschetta, Mauro & Christille, Claretta & Marguerettaz, Fabio', 2],
    ['Roberts', 2],
    ['Suzuki, Yuya & Ballarin, Francesco', 2],
    ['Torres, Víctor Manuel & Pardo, Paolo Luciano', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=67)',
    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);