function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bartels, P. J. & Nelson, D. R. & Kaczmarek, Ł. & Michalczyk, Ł.', 2],
    ['Bartels, Paul J. & Nelson, Diane R. & Kaczmarek, Łukasz', 1],
    ['Beasley, Clark W. & Miller, William R.', 4],
    ['Daza, Anisbeth & Caicedo, Martín & Lisi, Oscar & Quiroga, Sigmer', 2],
    ['Fontoura, Paulo & Lisi, Oscar & Pilato, Giovanni', 1],
    ['Fontoura, Paulo & Pilato, Giovanni & Lisi, Oscar', 2],
    ['Kaczmarek, Łukasz', 6],
    ['Kaczmarek, Łukasz & Michalczyk, Łukasz & Mcinnes, Sandra J.', 5],
    ['Li, Xiao-Chen & Wang, Da-Yong & Wang, Li-Zhi', 2],
    ['Li, Xiaochen', 3],
    ['Lisi, Oscar', 4],
    ['Moreno, Antonio & Roszkowska, Milena & García, Mario Alberto', 2],
    ['Pilato, Giovanni & Lisi, Oscar', 3],
    ['Pérez-Pech, Wilbert Andrés & Anguas-Escalante, Abril', 5],
    ['Wang, Hanping & Wang, Lizhi & Li, Xiaochen', 2],
    ['Other (9)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    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);